(M. Scott Peck, “The Road Less Traveled and Beyond”)

…having a weak will is like having a little donkey in your backyard.
It can’t hurt you very much; about the worst it can do is chomp on
your tulips. But it can’t help you that much either, and you could end
up with a life of regrets for not doing the things you thought you should
do. Having a strong will, on the other hand, is like having a dozen
Clydesdales in your backyard. Those horses are extremely massive
and strong, and if they are not properly trained, disciplined and harnessed,
they will knock your house down. On the other hand, if they are properly
trained, disciplined and harnessed, then with them you can literally move
mountains. Thus the distinction between harnessed and unharnessed
will is important. But to what is the will to be harnessed? Your will cannot
be harnessed simply to yourself. It has to be harnessed to a power higher
than yourself.”