Forty winks. A cat nap. Down time. A little shut eye. Whatever you call it, it’s important. Getting sufficient sleep is one of the best things you can do for your health during cancer treatment. Sounds easy, right? On the couch, you can’t hold your eyes open. Then, after you’ve walked 10 steps to your bed, you’re suddenly wide awake, finding sleep as elusive as a black cat on a moonless night. Breast cancer can make getting and staying asleep even harder. Steroids and other medications commonly used in treatment make some patients feel jittery. Anxiety, depression, and the vast array of conflicting emotions that come with a cancer diagnosis often make sleep hard to come by — but getting enough rest is critical. MORE: Six free things you can do right now to make breast cancer an easier experience These tips will help you get the sleep you need: Let there be darkness Blackout curtains are available at discount stores and provide insulation as well as light cancellation. Use them on their own or add them to window treatments you already have. And, make sure the drapes close all the way. If light peeps through, close that gap, even if you have to use oversized paper clips or clothes pins. You won’t notice your compromised aesthetics when you’re blissfully asleep. Make it a habit Try to get into and out of bed at the same time every day. Eventually, your body will understand what to do and it will be easier to fall asleep. Consistency is key! To help yourself make healthy sleep patterns a habit, mark your calendar for a 21-day block and stick to your routine.