When I think you've made it in aviation...
With a sweat-stained shirt covered in oil, dirt under your fingernails, sunburnt neck and tatty old thongs, you close the cowl on the aircraft you paid for yourself, built yourself, and fix yourself... point it into wind at an aerodrome with no known name in the middle of nowhere, and go wherever the hell you want, at whatever speed you want....
and simply enjoy what you are doing in aviation.