I'm 29 years old and I was a bully today
How were you a bully today?
I was mean to a person who can be harsh sometimes, but I behaved worse by losing my temper.
Even if you were frustrated with someone's behavior, it is never ok to be a bully. You should apologize for your behavior, and next time you should walk away from situations that make you lose your temper.
I have a hard time holding back.
If you feel like you have to bully others and cannot contain your anger, you should seek some professional help. It could escalate into violence at some point.