Dota...

How come i will be a feeder in 'dota' ? How come ?Someone can tell me ? Who can tell me ? Today , I play 3~6times with my friends...All almost feed...some is already feed...Im very sad...My friend always tell me 'don so brave , don so brave' .Sometimes i will control it very good & never feed before , sometimes i can't control it very good , just like a 'food' , always kill by my friends...So i will train my own...'don so brave'...