I can surely do that if the business is worth it. If I start a business that I know it has a future, I can sacrifice anything for it because I know I will enjoy my decision later. I cannot tie myself down a job which they can sack me at anytime without any apology.What to do when one is making so much money from a business, even more than his regular job is solely up to the individual. People react differently to this kind of situation. As for me, I will gladly resign from my job and face the business squarely. It will also help me not to overwork myself since I am already making so much money.