Best thing I can tell you to do is before you act or react on or to anything ask yourself the following questions:

How do I want to act/react?
Why?
What reason did this happen? Or Will my action possibly present future problems?
Is there some other possible explanation for this besides the one I thought of?
What else can I possibly do instead to "fix" this or to prevent possible problems?
What (out of all options including my original one) would be my best choice?

Reactions can include actions, words, beliefs on a situation or person, or emotions.

I don't see any evidence of you being a bad person - just a hurting one.