This requires a sensitivity about the impact that working 20 hours a day will have on your marriage. If things get rough, focus on keeping your personal relationship intact. It's harder to find a new spouse than another job. Running a business requires a full-time commitment and an exclusivity which limits the time available for relaxation, and family. Remember, if your family is unhappy, the rewards of running your own business will pale.
Staff turnover can be ruinous.
Entrepreneurs must have a good idea of the time and effort required to build a business, and must be aware of the pitfalls they will encounter along the road to turning the idea into a successful business. Remember, you must be able to pay the bills and meet the next payroll while you are out selling. And generally it takes longer to turn a profit than you plan. Be prepared for setbacks as the best laid business plans can't adequately prepare for the contingencies such as a worker quitting in the middle of a project, a delivery truck that breaks down en route or a significant order that is canceled. In summary, don't be discouraged.