College Majors?

I am about to start my 3rd year and am on my third major, but I am 99% sure this is the program for me. I started out freshman year as chemistry wanting to go in optometry then switched to biology still wanting to do optometry, but last winter I changed directions completely and am now working on a degree in the school of natural resources. The program I am in is called forestry fisheries and wildlife. I am focusing on the fisheries aspect, maybe look into the wildlife part a bit, but I want to end up working for the state or national park service doing work with fish and aquatic habitats.