People are very unambitious. They are preoccupied with careers. The more preoccupied, the less ambitious. The least ambitious are workaholics. They have no ambition at all.
Instead:
I once heard someone say that he had many books and had read all of them, twice, except for the Hegel, of course, and he laughed.
I once heard someone say she was at peace, and she was. Her body was wearing out, and had not long to go, but she was at peace.