Failure or success seem to have been allotted to men by their stars. But they retain the power of wriggling, of fighting with their star or against it, and in the whole universe the only really interesting movement is this wriggle.
E. M. Forster (1879-1970)
This sounds rather like Michael Chabon's famous quote, which he included in the afterwords of the re-release of The Mystery of Pittsburgh:
Three things are required for success as a novelist: talent, luck, and discipline. Discipline is the one element of those three things that you can control, and so that is the one that you have to focus on controlling, and you just have to hope and trust in the other two.