I wonder the same thing.

I used to be really depressed about 3 years ago.. wow, just typing that I can't believe it has been that long.

But I feel like it's coming back.

I want so badly to avoid it and I try to ignore the fact that I feel horrible.. and I wonder if it will ever end?

Is it like a disease like cancer where you can have relapses? Like once you get it once, you have to take care of yourself in order to prevent it from happening again.. I don't know, maybe.