determined,
You will have (once you go through the ranks) about 25 plus years in the airline industry if you start now. That is plenty of time to get started.
The only thing is, if you are doing well (salary-wise) at the moment, you will have to prepare yourself, and your family for a pay cut and they need to understand that you will be "eating, breathing, and sleeping" flying from now on...
Good luck. Let us know if we can help any more.
Lax