For me, a great therapist (we talk every week, sometimes zoom in). Getting away from people who trigger me. I hate to say it, but family can be a big trigger (for me) and I had to put my foot down so now I'm the bad person--and now I don't care. My emotional health is a priority.
There's so much that goes into trying to keep depression at bay. Also, since I think it ran unchecked in both my parents/hereditary, I too wonder is it always going to linger in the back? I read a lot, try to do what I enjoy, I'm VERY careful who I am around. I must say I have two pastors that call and check on me, but I hate bringing up religion, ya know?
Sometimes I just need to be alone, probably a lot. At work it's super hard to control who you're around, so I have to try to find a job where there's not a lot of people--again, these are things I can't control. But again and again, I try. But yeah, I too hate and wonder, where it always be there? And again, I'm super grateful when I see beautiful flowers, hear a great piece of music, movies, books, a painting. Nature. Peace. Quiet. Laughter. Meeting a kind person! I appreciate everything.