1. train your muscles hard. start off by doing 0.5-1 hour of push/situps every day. 2. then go to the gym 1 hour a day. 3. train the muscles near your polse so you can hit easier. 4. every time you got like nothing to do, put gloves on your hands (do this, else you will ruin your hands!) and hit the wall as much as you can to harden your knuckles and kill the nerves. This is so you can hit harder without feeling pain. 5. when you meet the bully again, say something back this time! he will try to scare you, keep taunting him until he will attempt to hit u. this is so you arent to blame 4 the fite. then you beat the hell out of him. good luck, this should take about 4-6 months in total, i hope u will succeed, i once had some1 anoying me too he enden up with a few broken ribs after he tried to beat me.