This blog post and the accompanying replies make for depressing reading, but they hammer in one key point:
Please, take a minute to think about the people you love, and be certain you're giving them everything they deserve, that you're truly there for them.
If you ignore your personal life in your quest for startup success, you may find that one day, you turn around, and there is no personal life left.
Life is what happens while you're busy doing something else.