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It's 4:45 in the afternoon, and it's already dark. You pulled a blanket over your knees an hour ago and haven't moved since. Dinner sounds like too much work. So does texting your friend back.
If that feels familiar, you may be wondering how to cope with seasonal affective disorder before the whole winter slips away. I want you to know two things up front. You're not lazy. And this is very treatable.
SAD can make winter feel like something you just have to survive. But with the right tools, it doesn’t have to be. Small changes, started early, can make a real difference in how you feel.
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What Seasonal Affective Disorder Really Is
Seasonal affective disorder, or SAD (a fitting acronym if there ever was one), is depression that follows the seasons. It isn't a separate diagnosis. It's a pattern within major depression or bipolar disorder. For most people, it starts in fall, peaks in winter, and lifts by spring.
About 5% of Americans have SAD. Studies have found it in nearly 10% of people in New Hampshire and less than 2% of people in Florida.
The main driver is light. Shorter days throw off your circadian rhythm, your body's 24-hour internal clock. Less light means less serotonin, the brain chemical that helps steady your mood. It also means more melatonin, the hormone that makes you sleepy. That's a big part of why winter depression feels so much like hibernation.
Signs It's More Than the Winter Blues
SAD is more than feeling a little down when it snows. Common signs include:
Sleeping more and still feeling tired
Losing interest in things you used to enjoy
Craving sweets and carbs, and gaining weight
Feeling irritable, anxious, guilty, or hopeless
Trouble focusing or thinking clearly
Low sex drive and headaches
Pulling away from people and feeling extra sensitive to rejection
That pull toward isolation is sneaky. Social support protects against depression, yet SAD makes you want to hide. Cold weather makes hiding easy - no one wants to drive across town in a snowstorm to meet friends.
Keep an eye on alcohol, too. SAD cravings can include it, and research shows drinking tends to rise as the days get darker. A drink might take the edge off tonight. But alcohol is a depressant, and it makes depression worse over time.
Not every winter low is SAD, either. Holiday stress, time with difficult family, or a seasonal job that ends every winter can all drag your mood down. Those deserve care too, just a different kind.
Who Is Most at Risk
You may be more likely to get SAD if you have a personal or family history of depression or bipolar disorder. Living far from the equator raises your risk. So does living at high altitude (yes, Colorado, that means us). Women and adults ages 18 to 30 are also diagnosed more often.
In my practice, clients with bipolar disorder tend to struggle with seasonal depression in winter. If that's you, planning ahead matters even more.
How to Cope with Seasonal Affective Disorder: What Actually Helps
There’s no single fix for SAD, and that’s actually good news. You have options, and most people do best when they combine a few.
Below are the treatments with the strongest research behind them: light therapy, medication, therapy, and vitamin D. Some work in a matter of weeks. Others work best if you start before the dark months arrive. Think of this as a menu, not a checklist.
A quick note first. I’m a therapist, not a doctor. Please talk with your doctor before you start any treatment on this list, especially if you have bipolar disorder or take other medications.
Light Therapy
Light therapy is the top recommended treatment for SAD. It uses bright light to mimic the sun and reset your internal clock. To make it work:
Use a light rated at 10,000 lux
Use it for 20 to 30 minutes, early in the morning
Sit 16 to 24 inches away, with the light at eye level and a bit off to the side
Let the light reach your eyes, but don't stare straight into it
Most people notice a change in two to three weeks. Some feel better in one.
Two cautions. Many cheap lamps you find online don't reach 10,000 lux, and no agency regulates them. Read reviews, or check yours with a free light meter app. And if you have bipolar disorder, light therapy can trigger hypomania, so work closely with your doctor. Stop and check in if you get headaches, nausea, dizziness, insomnia, or tired eyes.
Honestly, sitting by a lamp for half an hour every morning never fit my life. What completely changed things for me were Luminette light therapy glasses (affiliate link). I wear them over my regular glasses while I make coffee, and check email in the morning. No lamp has worked nearly as well for me.
No device? Get outside in the morning light when you can.
Medication
Bupropion (Wellbutrin) is an antidepressant often used for SAD. A 2019 study found that starting it between September and November, before symptoms hit, led to fewer depressive episodes over the winter. Timing matters here, so talk to your doctor early.
SAD-Specific Therapy
CBT-SAD is a short form of cognitive behavioral therapy built for winter depression. You slowly add back activities you enjoy, easiest first. You also learn to challenge thoughts like “winter is unbearable” and to spot early warning signs next fall.
The results are encouraging. In a study of 177 adults, CBT-SAD worked about as well as light therapy. And one smaller study found that only 7% of people who did CBT had symptoms come back the next winter, compared with about 37% of people who used light therapy.
The skills stay with you even when the light box doesn’t. Few therapists offer CBT-SAD, but other types of therapy can help too, like classic CBT (cognitive behavioral therapy) or Internal Family Systems (IFS).
Vitamin D
Research on vitamin D alone for SAD is mixed. Still, low vitamin D is linked with depression and anxiety. Ask your doctor to test your levels, especially if you have darker skin, celiac disease, IBS, or lactose intolerance. Salmon, tuna, egg yolks, and fortified milk are all good food sources for Vitamin D, or you can take a supplement with your doctor’s approval.
Small Daily Habits That Make Winter Lighter
Treatment is only part of the picture. The small things you do every day matter too. Movement, sleep, mindfulness, and connection all help steady your mood when the days get short. None of them have to be big or perfect to help.
Move Your Body, Briefly
Exercise is the last thing you want to hear about when you're depressed. But one large review found exercise was about 1.5 times more effective for depression than medication or therapy. Short, moderate activity worked best.
Aim for about 20 minutes a day. Walking counts. So does dancing in your kitchen or mopping the floor (bonus: clean floors). Your local rec center is also underrated. It has pools, classes, and other humans.
Protect Your Sleep
SAD pushes you to oversleep (and some people can also experience middle-of-the-night insomnia), so structure helps. Try your best to:
Wake up and go to bed at the same times every day
Skip naps
Wear amber blue-light-blocking glasses in the evening
Keep your bedroom around 68 to 70 degrees
Take a hot bath about two hours before bed (yes, there is research on this)
Wind down with a cozy routine, like chamomile tea, a good book, and a little lavender
Notice and Write
Mindfulness means noticing what's around you and inside you without judgment. You don't have to empty your mind. You just watch your thoughts instead of chasing them. Journaling can help too. Track your mood, your routines, and what's working. Not sure what to journal about? Grab my 20 journal prompts for depression that focus on self-compassion below:
Stay Connected
When you’re depressed, being around people can feel like the last thing you have the energy for. But connection is one of the strongest protections we have against depression. Time with people you trust helps your nervous system come back online in a way that time alone can’t.
The tricky part is that SAD pulls you inward right when you need people most. Winter makes hiding easy. So plan for it ahead of time. Set up a standing coffee date. Say yes to the invite, even if you only stay an hour. Take a class where you’ll see the same faces each week.
You won’t feel like it, and that’s okay. Go anyway. Most people feel better after, even when they didn’t want to go.
If friends feel far away, the ADAA, NAMI, and DBSA all offer support groups you can join online.
Start Before You Need It
You don't need to do everything on this list. Pick one thing. Order the light. Book the doctor's visit. Put your walking shoes by the door. Learning how to cope with seasonal affective disorder has less to do with willpower and more to do with setting things up before winter sets in. Be patient with yourself. Small, steady steps count.
You don’t have to get through another winter on your own. At Courage to Heal Therapy, I help clients build a plan for the darker months before symptoms take hold. This is especially important if you live with bipolar disorder, where winter can bring deeper lows and treatments like light therapy need careful timing.
Together, we’ll find what steadies your mood and keeps you connected to your life. I see adults in person in Broomfield and online across Colorado. Book a free 20-minute consultation to see if we’re a good fit.
