I think my weakest trait is my impa

I think my weakest trait is my impatience. Whenever I work in a team and a member is not performing up to my expectations, I can get impatient and annoyed. I understand if they are working hard and their portion is difficult, but sometimes a person can't do the assignment due to incompetence or laziness. A while back I would get frustrated and start complaining, but I realized that I can help out by explaining things to some people and encouraging lazy people by reminding them of deadlines. I know it's bad to be impatient, but I'm definitely working on it.