I agree with all the comments so far.
Enjoy the ride. It can take years before you finally find your place in life - but all of it is a learning opportunity. There is no decision that is ever set in stone.
Follow whatever is in your heart - the thing you feel most excited about. Life is constantly evolving and if that doesn't work out, then there will be something else.
Don't get caught in the idea that there is a right decision and a wrong decision. All decisions are valuable, and whatever happens you will learn and grow.
I recommend Susan Jeffer's book, Feel the Fear and Do It Anyway.