Running a business is not a walk in the park. Elon Musk defines it as eating glass and staring into the abyss. It is exciting initially but as time passes by, reality sets in, customers may not sign up, plans fail, and (God forbid) if your luck parts ways, the recession compounds you. The takeaway here is to have high pain tolerance. The key to ensuring you own a successful one is dealing with business problems with utmost attention to detail.