Even if I earn all the millions of my own time, I wouldn't stop to push for more. As long as you live, your needs can never be limited. Human needs are unlimited, the higher you go in life, the more hungry you are towards achieving other things you aren't able to achieve previously.
Their are times at my level I can earn easily $50 a day, which is above my set mark, still, I wouldn't be contented for the day. Because, I want more, since I've got that one, my aim will be to go for higher amount of money. I'll continue to work until I am tired for the day. Provided you're working hard, you'll always seek to go past your target in the future. No one will love to remain stagnant with same amount of earnings year after year, improvement is very necessary in life to fend for bigger needs.