How to pick yourself up from depression

It's been two years since I have won from depression and suicidal thoughts. I really think of myself as a strong warrior. But I think we can all agree that no matter how brave you are or how successful you become, depression is not something you can easily get rid of. There are days when it comes crawling back to you.
Even if things have been going great and smooth until then, I always get caught in some days where everything seems wrong. Like I'm not really getting anywhere with my life. It is an internal struggle that not many people around you might understand, which is why you feel you're completely alone.

So, this is what I do.