No, that shouldn't be necessary except in the beginning. I'll work smart enough to put in reasonable hours. Experience indicates that successful entrepreneurs work terribly long hours for many years before they get to relax. Playing with style, grace, and good sportsmanship. Enjoying myself and getting a good workout.
Small business is an extremely competitive world.
The best entrepreneurs fixate on winning, on being better than the other guy. I'm a real joiner. I belong to five or more organizations. I go to meetings regularly, participate actively, and run for offices often. I belong to a few organizations but am not too active in most of them.