Do you have any of your ratings yet or are you just considering starting flight training? If you have no ratings it's definitely not a good idea to just drop everything and try to be a commercial pilot. Stay in school and hold a normal job while getting your ratings on the side. If you still want to fly for a career after you get your instrument rating then start commercial and possibly CFI training and you can consider switching jobs then.

Lots of people get through their private and/or instrument and decide they don't want to fly for a career. It's best to wait until you have the ratings before making that decision. Always give yourself options.

The biggest mistake I made in my career was not leaving myself any options. If my career as a pilot doesn't work out I'll probably be screwed. Don't do that to yourself.