I don't think forcing youself out of this mood will do any good. Try to lure yourself out of it instead

There are many things you love, many activities that make you feel good.. certain tasks which give a sense of achievement, right? Go for it!
Give yourself a little present even if it's just a smile. No punishment - rewards all the way!
I've learned that in order to be happy, I needed to encourage myself in coming out of the cave. Brute force works, but I tend to panic and hide back right away. Not exactly something that helps with the sense of achievement

Bring good into focus and all the bad will melt away very fast.
It's just how everything works