What should i be or what field should i go into?

I am in college and i feel i am not in the right major i am undetermined and not doing as well as i know i can. I love the outdoors! i want to be successful and i want to be determined! i know that if i am studying something i love i will do better at it and i will be more determined and when i am determined i will be successful. I love hunting and managing wildlife, but i also want to make money. Any suggestions?