Mark Twain *~ "I have achieved my seventy years in the usual way:  by sticking strictly to a scheme of life which would kill anybody else. . .
We have no permanent habits until we are forty.  Then they begin to harden, presently they petrify, then business begins.  Since forty I have been regular about going to bed and getting up ~ and that is one of the main things.  I have made it a rule to go to bed when there wasn't anybody left to sit up with; and I have made it a rule to get up when I had to.  This has resulted in an unswerving regularity of irregularity.  It has saved me sound, but it would injure another person.
In the matter of diet ~ which is another main thing ~ I have been persistently strict in sticking to the things which didn't agree with me until one or the other of us got the best of it."

~ * (1835 - 1910) "A Severely Moral Life," a speech at a dinner, Delmonico's Restaurant, N.Y., Dec. 5, 1905. Mark Twain, An Illustrated Biography, Geoffrey Ward, Dayton Duncan, Ken Burns, Knopf,2001.
Image:  Wikipedia