My bedroom and living room windows have light-blocking curtains over blinds. I usually leave both closed in the bedroom, because I'm never in there during the day so there's no need to open them. On weekends, I open the curtains in the living room when I get up and leave them open until it starts getting dark. I keep the blinds partially closed so it's harder to see in from outside, but I need the light to come in during the day, otherwise I can never wake up and feel even mroe depressed.