I suffer from depression, and anxiety. I've been seeing a psychiatrist for a while now. You never fully get rid of the cycles, but with the right community and practice. You can have better days than bad ones. Personally did a lot of educating myself. Made a mental list/notes of everything that was bringing me down. That way I could work on them one-by-one. Making a schedule helped me so much. Without one, I gave up pretty quick on things. Chose to sleep instead of organize myself. You wouldn't imagine having a routine for yourself to help in any way but it did for me. I started finding hobbies to squeeze in. keep myself busy, and from thinking too much.
Have you tried meditation? There are guided, positive affirmation audios on YouTube. With a bit of practice, it could help coach you into finding proper clarity.
I also did a lot of small things that, at first, didn't believe were going to help me at all. Like opening a window, and airing your room out with fresh air. Buying a water feature for your room, to listen to- etc.
Best of luck!