One mistake I made early on was neglecting the compound interest of focus.
I thought two things at 30 hours each was smart risk management. Split the bets. Stay diversified.
Wrong.
Go from two things at 30 hours to one thing at 60, and magic shows up. Around hour 40 you unlock a door you never see when you're context switching. Then next week you stack another 60 hours on that insight.
I thought 60 hours on one thing would be 2x better.
It can be 10x. Or 100x.