I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.
Nowadays, people don't ask you how you are, they say, 'Are you busy?' meaning, 'Are you well?' If someone actually does ask you how you are, the most cheerful answer, of course, is a robust 'Busy!' to which the person will reply 'Good!'