You own your own business.
You provide specialized services to specially selected clients.
You properly manage your commitments so as to not stretch yourself too thin.
You charge an appropriate rate (re: hourly) for the services you provide.
You hire staff as needed, or partners, whatever works best for the business you are in.
For me, it's operating a boutique communication strategy firm that specializes in small business branding, marketing, internal communications, and audience targeting and providing political consultation / campaign management assistance for candidates for public office.
Good luck.
((Granted, my situation is quite different than the average generic Pilot person. If you do not have additional skills outside of pulling the gear, talking on the radio, advancing the power levers/thrust levers, pulling/pushing on the yoke/stick, kicking the rudder pedals, etc. you may have limited options and may end up having to rely on questionable businesses that require you to invest significant amounts of time and money for not a whole lot of return. However, if you have a degree, a graduate degree, and some credibility in a field outside of Aviation - I HIGHLY recommend finding an angle and opportunity to harness that will give you enjoyment when you're not actively piloting an aircraft.))