Hey 4.
I know what you're saying. If you're like me, your anger might stem from blaming yourself about the end of your relationship. This is natural and I'd like to think everyone goes through this (dumpees). The key thing is not to let the anger consume you. If it does, you will either lash out at yourself (doing self-hating things), at others (driving away friends), or most dangerously at your ex (which opens up new levels of hurt). Channeling your anger into construcutive projects help a great deal, whether going to the gym, doing a hobby, or using it as a (very powerful) motivation to change yourself. If you control your anger, rather than letting it control you, you'll see that you can use it to positive ends. Eventually, your anger will fade, and you will have made progress to boot!