[header] How to stop yourself from bullying [title] Apologize. [step] Approach the person you have been bullying and sincerely say you are sorry. Telling him is one clear way to let them know that you are sorry for bullying him and won't do it again. 
[substeps] Try saying, " i want to apologize for how awful i have been to you. I know i can't take it back, but i do want to tell you that i am truly sorry.