It may be slow and small but I get up, hug my kids and give them compassionate attention. It doesn't feel good, but I do it anyway. I kiss my husband and thank him for coffee, even though I don't feel thankful. I show up for a business meeting and behave like a woman grateful for amazing work. I go to Crossfit and I act like someone who is happy and lucky for the ability to move and exercise, even though I actually want to curl up into a ball and quit.
When you have depression, making positive changes is, like, pretty much impossible. Taking that first step is the hardest. For me and seasonal depression I found using a light therapy box to be a really easy first step towards better mental health.