I'm not sure what I want to do with my life?????? please help me?

I'm at a community college, 20 years old, no car, live with parents. THis is my first semester and Im not doing so well.. A,B,B,C. I'm also not sure what major I want. I love being outdoors and flying. In fact I KNOW i want to become an airline pilot, however, i need to go to college for a backup and a starting career so i have money while im flight training. I though about environmental engineering because i do love the environment and would like to help, however, im not great at math that C i ahve right now at midterm is for a remedial math course. I was thinking business but that would be a waste because when i transfer it wont be to a prestigous school.. i was looking at ASU, UND, PITT, Iowa State, Oklahome state for engineering,,, and DePaul, Fordham, PITT, UIUC for computer science,... fordham depaul, pitt, etc for business.. im not sure what i want to do something i just wanna say screw it and major in aviation anyway because its all ive ever wanted to do FLY> After school Im going to take 6 months off everything and hike the appilation trail...