When you’re starting out as an entrepreneur, be it solo or not, you should not go all-in immediately.
When you test the waters you will know if the business, idea or lifestyle will be in the cards for you as a person. When you fail to be excited about working on your own business, you might not want to continue as it’s most likely a hard job.
This should be applied to all walks of life, for example in role-playing you want to test boss fights before going all in on your BBEG fight.
Reference
Fried, Jason, and David Heinemeier Hansson. Rework. 1st ed, Crown Business, 2010.
Highlights or timestamps
First, test the waters: don’t quit your day job to slave 100-hour weeks, but rather gauge your enthusiasm by squeezing in a few hours each week to work on your idea. You don’t need to take on crippling amounts of debt either; just use whatever facilities and equipment you have at your disposal or can easily afford.
— ^38b43a from Rework