Doing what you want to do is life; and there is no real satisfaction in living if we are compelled to be forever doing something which we do not like to do, and can never do what we want to do. And it is certain that you can do what you want to do; the desire to do it is proof that you have within you the power which can do it. Desire is a manifestation of power.
Financial Success Through Creative Thought: Or, The Science of Getting Rich (ed. 1917)