What percent profit should my business have to be successful?

Answer 1

Well is this a service industry product?, manufacturing?
% Profit dosn't really mean anything without specifics. Is there any borrowed money? The Rate? Or all cash? What about overhead and cost of goods sold? I'm not picking on you, and would like to help. I consult on these types of things.
But really anyone who would give you a % answer, without knowing any specifics is rather clueless and is not qualified to answer your question as written.....

Answer 2

Percentage of what?

It's not about percentages. It's about there being enough profit to justify the time you spend working your business.