First tip without trying to come across as a smartass...
Make time to go to school and get a degree. The chances of making enough of an income to support yourself, much less a family, plan for retirement, etc.. in this sport are very, very little from a statistical standpoint.
Chase your dreams, but also plan for the future and build a safety net for the unexpected. There are alot of unplanned things that can happen in life, some good, some bad.