I've been pretty low before. I wanted it all to end. I used to blame myself. I used to blame everyone else. There was two main things I found that I used to help myself get better. You have to first help how you feel at the moment. At the same time you have to help how you feel in the future. There are many ways to do this and I will go through a few easy ways.

The first part is getting yourself to feel good right now. You could find a game online that you like. Simple games, puzzles, shooting, blowing things up, funny games, anything you can find that you like. Keep looking and trying to find something you like. Try addictinggames.com and newgrounds.com but they are countless other websites.

Another thing you can do is browse reddit.com It has feel good stories, pictures, humour, silly things, weird things. etc.

Basically these are things that will keep your mind occupied and distracted. It's a release from your day. It's your own personal time. It's anything you want it to be.

The second main important thing is eating. You have to eat, maybe not perfect but be sure to get enough protein such as beef, eggs, fish, chicken, milk etc.
Food is a medicine. Medicine will be your food. If you want to feel better in the future such as two hours from now, make sure you eat. Food will fix the future. You can fix the now.