Simply because something worked for one person does not mean it would work for another, so you should take any advice with a grain of salt. Luck plays a huge role in startup success too, so you could be working just as hard but at the end it would not work out.
As far as kids are concerned, Bubs has previously explained that he loves spending time with them, but also admits that he was not able to really connect with his kids until they were past one years old. If you are a dad who feels the same, that's okay, you will spend more time with them once they are not little babies.
To make sure your marriage stays successful while with kids, it is important to recognize your partner and perhaps act less selfish, whether or not you feel like you deserve recognition for your valuable contributions to the family life too.