I want to invent something cool.
It's a lot of responsibility, and I have to get good at so many different things in order to make the business what I want it to be.
Underestimating the complexity involved with getting goals met.
1. No one will ever care as much as I do, meaning their work won't reflect the same level of personal investment. 2. Everything costs more and takes longer than it seems like it should. 3. The communication skills and reliability of hired workers is as important as their skill sets.