Why am I like this?

It seems that you’re angry because, in general, you’re not feeling happiness. When we don’t feel happy, things upset us much easier than they normally would. Sometimes the smallest things can make you mad, even if it’s not intended in the way it came across. In any case, I think the main thing you need to try and do is do things that you enjoy. If you’re not sure what, try picking up a new hobby or do anything fun that interests you. If something upsets you along the way, keep a private journal about it to let out that frustration. Most of all – try to let go of your ex. I realize you’re saying you’re not upset about him, but crying about him is definitely bringing your emotions down. So try your best to let go and surround yourself with those that do make you happy. Trying to do things to keep yourself distracted may also help (the hobby or new interest helps a lot with this). If you can’t think of anything to do, go for a walk or run. Check out the beech, write, draw; anything.