Start college applications early. Apply to Ivy League schools. Consider majoring in CS. Learn investing. Work out and work on bodybuilding. Think positively. Study hard and plan for careers early. Start dating don't be a nerd :D. Go home and see family more often. Start side businesses with friends. If you meet that guy 12 yrs later again, bravely show your affections and make him stay. Enjoy life. Life is a journey full of adventures and happiness :)