“if you have a hard time explaining the primary benefit of your concept in more than a sentence or two, you may need to rethink the idea. If the primary benefit is unclear to potential customers, you won’t convert many of them into paying customers A side hustle is something that makes you money, not costs you money. If you don’t see how you could make money from the idea, preferably in a short amount of time, it’s probably not a good idea.”