I am too clumsy- please help me, I feel so stupid sometimes and I want to stop?

dont be silly, you arent stupid. you just need to pay more attention to things around you :). i used to have a bad habit of walking into my friends whenever we walked somewhere! i just tried as hard as i could to focus on things around me, and sometimes if i screwed up my friends would tell me "you are doing it again", and that made me focus again. after a while it just becomes something you do subconciously, just got to train yourself :).