It wasn't all for naught, but success is not going to completely fill the hole inside. Lesson? It's simple, don't work all the time and neglect your family. I cringe everytime I hear Musk talking about working 100 hours a week. He has kids by previous marriages afaik, but it sounds to me like he's not much more than a sperm donor. He's a terrible role model for fathers. I worked probably 70 to 80 hours a week for 9 years. My son has a lot of complaints about me not being there and he's right. The only thing I can say to him is that I'm here now.