People never trust an accommodating man with important things. That may sound harsh and cynical, but check it up in your own experience. If you have a severe illness, for example, you turn to the busiest, most exacting doctor in town. The fact that he is busy and can’t be bothered by little things gives you confidence in his ability and judgment.
Read the whole thing, from 1922. Via 1922: Why I Quit Being So Accommodating | Mike Cane’s xBlog.