Advice

Hey...I kinda need help for my future, feel free to send some comments.
Okay for college I am 100% unsure what to major in.I like to help people, I like to protect the environment and even though it's nothing big I try my best.I also like to achieve great heights so I want to own some big company in which i can give back:philanthropist. However my personality is very flexible, ya know if you want to do something I would change my schedule to fits yours. I guess I like to go with the flow which is a big problem..I NEED HELP!!!!!!!!!!!!!!!!(I am this worried because college is 2 years away and i want to be ready for it) T_T