Aggressiveness in basketball....and life.?

i lack aggressiveness in basketball. when people run, i just jog. idk why i cant be aggressive. i can clearly imagine all the amazing things i can do, but when it comes to people i just give up. i dont even try dribbling, i just get the ball and p it. i also shoot without aggression, so my shots are like always missing and ****. on defense, those point guards can cut right through me, and so can every other position. this applies to real life too. i dont really speak much and i dont talk back even though im right. are there any baby steps to make me more aggressive so i can finally play bball with pion?(and in life too)