Something in human nature causes us to start slacking off at our moment of greatest accomplishment. As you become successful, you will need a great deal of self-discipline not to lose your sense of balance, humility, and commitment.
Source: The Alexander Complex.
-- H Ross Perot, (Jun 27 1930-2019), US computer industrialist, philanthropist; He is a self-made billionaire; founder/owner of Electronics Data Systems, 1962-84; presidential candidate, 1992.