Rest assured that whatever station of life we are placed, princely or lowly, it contains the lessons and experiences necessary at the moment for our evolution, and gives us the best advantage for the development of ourselves.
You've got to be success minded. You've got to feel that things are coming your way when you're out selling; otherwise, you won't be able to sell anything.
I think what a life in science really teaches you is the vastness of our ignorance.