My mistake

My mistake is about school club activity. When I was junior high school student, I was belong to blassband club. However I can't keep to hold out this activity. Later I really regreted what I did, so I was belong to blassband club in my highscool again. Then I kept blassband until my retirement. I was really fun and I can have a lot of precious friends. Also I can learn a lot of things from club activity. I learn importance which accomplishes one thing from my mistake. And I want to accomplish one thing which I try.