It’s a mistake to allow our ambition to be primarily about getting more for ourselves.
Selfish ambition is a symptom of insecurity. We fear loss and we fear not being loved. So we overcompensate by trying to acquire more money, possessions, fame, etc.
Incidentally, the desire to be famous is narcissistic. The desire to make positive change in the world, regardless if you get credit for it, is a much more worthy aim.