The above individual is doing it correctly. Study hard get to the highest level you can. As time permits work on the aviation part to build your time. Maybe get involved with a glider club and work as a line boy. May clubs will donate airtime for some ground work.
I've been pushing airplane for over 40 years and have watched as some of my fellow aviators fell by the way side. Most due to medical problems, even in there 30's. So have an education you can fall back on.
The other is economics. Companies come and go. When the hangar door closes on one company it is often easier to get a temporary job, doing something else, till the window seat offer returns.
I've worked for three airlines plus the military. In between window seats, I started my own manufacturing company, ran a construction company and a new car dealership. Without the base education I'm not sure it would have been as good or as smooth a road.
Good luck and fair sky's in your future.