Not all completed
I started my first homebuilt when I was 14 (1972). My father used to bring home magazines about homebuilt airplanes, some of which I still have, that inspired me. I bought the plans and some spruce for a KR-1. I did not have enough knowledge (plans were skimpy) or resorces to complete. Still have wood pcs stored in the basement.
The second attempt was started at 16 with my dad, a Pober Pixie. We go a little further along on this one. The fuselage was welded up and the ribs were started. I even entered it in the 4H fair as a project. Girls, flying and an education got in the way. Status today, the fuselage has been scrapped due to corrosion, the ribs and spruce spars are in the basement.
The thrid attempt was started after I finished collage. A crop duster friend and I bought a partially completed Monneri saileplane kit. I ended up with it and completed 60% of it. It hung from my garage ceiling for years. After I started my RV-6 I sold it to a soaring buddy who already had one Monneri and wanted another.
The fourth attempt is my RV-6, started in 1994 when I was 36. I am now 50 and the plane will fly this spring. The FWF has been completed, the wings are at the airport, I expect to start final assembly at the airport in April. I never gave up in 36 years that I would one day build an airplane.
If at first you do not succeed try, try, try and try again.
PS: This will not be my only one.