Re: your original reference to the other thread about small businesses, in that thread I wrote that I hated my life for a while because of the business. This is probably very common.I had to schedule my shits on a calendar dude, think about that for a moment, I had to go on a calendar and schedule it in so that I could have permission to take a shit. I gained 50 lbs. I had high blood pressure. One year, one of my employees fucked up, and I had to work on Christmas, so much for enjoying family. I HATE working on holidays, but the douchier customers will want you to do that all the time. I also had romanticized the notion of being a business owner, and the reality was harsher than I expected.
That is not to say that you can't make it work for you, just that it is likely going to be very challenging, and failure is definitely an option. You may actually end up so miserable that you look forward to failure as a release from your bonds. I was finally able to tame my business in year 5 or so, now I love it, but I also realized I enjoy being half as busy as I was when I was raking in a ton of cash. I don't want the extra cash anymore, because it carries too much baggage.
Family is hard too. Do NOT start a business and a family at the same time, that is a recipe for disaster. Start one, wait 3 years, then start the other when the first has calmed down.