by 20 I had already built a 3 channel (bass,mid,treble) sound activated triac controlled "light organ" and without any better ideas, decided to go into Engineering.
I never got rich doing it, and probably could have made more money as a plumber.
But I had a grand time with bleeding edge technology involved with inventing many world firsts. like SCADA in '77 using robotics for inspecting nuclear reactor tubing using eddy current technology
0.1 mm per reading for hundreds of miles of tubing to find flaws before a leak occured in heavy water, lots of instruments for solid rockets for research including NASA , then ISDN Broadband WAN with payTV, burglar fire alarms, teleshopping, remote opinion polling , digital telephony high speed serial port and 1.5Mbit/s (DS1) two day modems to 100 home field trial in 1980, world's smallest TV in eye viewer for VGA and NTSC in 1999 long before google Glass and beat motorola to the market with a usable product for reading faxes on old cell phones or schematics hands-free in aircraft maintenance or scanning pigs with ultrasound equipment hands-free. just to name a few.
make sure you have good posture and never lean on elbow while using mouse to avoid RSI and shoulder-rotator cuff injury for 6 mos.