This is such sage advice and almost never mentioned. As an entreprenuer who's obviously over optimistic about the startups probability for success and the speed that it occurs you usually skip and sacrifice a lot in life.
One thing I learnt the hard way is that the best way to ensure personal success is to plan your life's goals as if you have a 9-5 job with secure income. Major investments (housing, loans etc) and relationships should not be on hold till the next company milestone. Having a spouse kind of forces this upon you, but getting a supportive parent/mentor to help you plan your life apart from your startup will really help.
One thing I learnt the hard way is that the best way to ensure personal success is to plan your life's goals as if you have a 9-5 job with secure income. Major investments (housing, loans etc) and relationships should not be on hold till the next company milestone. Having a spouse kind of forces this upon you, but getting a supportive parent/mentor to help you plan your life apart from your startup will really help.