Your most important tools will be your honesty, labor, courage, practice, luck and utter concentration. Inspiration can be magnificent. Handel wrote his “Messiah” cooped up in his room for two weeks. No one saw him, and his meals were allegedly slipped under the door. (Either it was a very strange door or he survived on fruit leather and matzah.) Then again, Voltaire—”On Sunday I was seized by inspiration”—wrote “Phèdre” in six days flat, a play that made his audiences weep not from emotion but because they had to sit through it.
More valuable than speed or being struck by what you think is lightning (and others usually do not) is concentration. When asked how he managed to come up with the calculus, surely one of the greatest achievements possible for the mortal mind, Newton replied, “I thought of nothing else.”