Having a business that is your sole source of income means you're at a constant risk of it going down also taking you down. Your back is against the wall every day. The more you work at yourself before you get to that point, the more you realize who you are both good and bad, the more you can identify people and make good judgement calls the better things will be. The more diverse set of tools you have at your disposal to empower your mind to make a choice that is not destructive is the single most important thing you can have at being in business. It's about you being the absolute best you can be and the way I got to that point was losing basically everything and chipping away using the little bit I had left.