Forgive me if there’s a section/ thread on this topic.

I’m 22 and I should be a Man by now. Problem is, I have an issue with assertiveness, especially with telling them No Like today, a plate asked me to help her Move out. Now, I was under no Obligation to help her, I did anyway. Spent 5-6 hrs when that could have been spent in the gym, meal prep. Working, you get the Point.

This has always been a weakness of mine, and I know I was raised by a single Mom so that’s where I get it from (and myself, of course) Any of you guys got tips on growing some balls/ being assertive?