ok.. here goes.
1. Set a date night every 3 weeks. Close the shop 2 hours early... and take your wife and kid out for a Dinner.
and make it an event. Not just you go home with a packet of fried rice mate... go home.. take a shower, get properly dressed and take them out for a proper dinner at a medium (or your affordable) level place. Try keeping AWAY from fast food places like KFC and Mac... try to make it a personal, private dinner at a good place.
2. I know business cannot be "just" handed over to someone and come over.. that takes time. So.. how about you actually make it a point to Close the shop half day on a pre-set business down day like a Monday or Wednesday and go home early to spend time with your kid.
3. Dont work for a future less than 3 years ahead. If your goals are far fetched over 10 years time to work and relax..thats just utter rubbish. Have realistic goals planned in short of 2-3 years to achieve.
4. Hire an employee who is NOT a friend or NOT a relative. But hire a person who's more qualified than you but not smarter than you. (I believe you know the difference of this statement) and be a MENTOR than a boss. Then mentor him to be a protege than an employee. thats how you build trust in a small one man company.
5. You said your wife is home after the Child birth... FINE .. but that doesnt mean shes disabled or retarded...get her to do stuff of your business that doesnt require physical presence in the office. (i dont know your business.. but I usually get my missues to do me up travel plans, formal writeups etc ) so she becomes a part of your success than just a person in for the ride ( but with my missues, its usually a tricky situation as shes busy her self with her own crap load of shit to do).
Hope it helps
well said