Anger is fine as long as it does not control you.
Here is a list of anger possibly taking over you:
I have gone through this list of anger. It is good that I am aware of it. That way, I can neutralize my anger.
A good friend told me, "Just let it go." Also, traveling solo has given me a different perspective in life.
Most importantly, acknowledge your anger, and be mindful of it.
Remember, it is impossible to please everybody. Also, it is impossible to be liked by everybody.
You can either hate, or like me. That's fine. Go with what you want. It's your choice. It's your life.
I am at peace. I am focused on myself.