Great gem there. I've noticed the same but hadn't had it stuck in my mind that the building stage is the most involving but after that (for most products) there is usually little to do.
Once I have the third project up and running, I plan to focus on freelancing or a full-time job, and grow these on the side.
Once I have the third project up and running, I plan to focus on freelancing or a full-time job, and grow these on the side.