“Any problems that may occur have ultimately been caused by you, because you are responsible for where you are and what you are doing there.”

Venkatraman Ramakrishnan interview: 'It takes courage to tackle very hard problems in science

"Fiat's John Elkann shares family business views" http://www.fbn-i.org/dec-10/article1.html, FBNenews, 12-15-2010

Quoted in What’s On in London (15 August 2001).

Reported in Marshall Brown, Wit and Humor of Bench and Bar (1899), p. 67. Alternately reported as "Never do today what you can put off till tomorrow. Delay may give clearer light as to what is best to be done", reported in Jacob Morton Braude, The Complete Art of Public Speaking‎ (1970), p. 84.

Original: 如果戰端一開，就是地無分南北，年無分老幼，無論何人，皆有守土抗戰之責任,皆應抱定犧牲一切之決心！
蔣介石廬山《應戰宣言》

Interview to Cosmopolitan (2016)

Ch. IX : Outdoors and Indoors, p. 336; the final statement "quoted by Squire Bill Widener" as well as variants of it, are often misattributed to Roosevelt himself.
Variant: Do what you can, with what you have, where you are.
Attributed to Roosevelt in Conquering an Enemy Called Average (1996) by John L. Mason, Nugget # 8 : The Only Place to Start is Where You Are. <!-- The Military Quotation Book, Revised and Expanded: More than 1,200 of the Best Quotations About War, Leadership, Courage, Victory, and Defeat (2002) by James Charlton -->
Variant: Do what you can, with what you've got, where you are.
Context: There are many kinds of success in life worth having. It is exceedingly interesting and attractive to be a successful business man, or railroad man, or farmer, or a successful lawyer or doctor; or a writer, or a President, or a ranchman, or the colonel of a fighting regiment, or to kill grizzly bears and lions. But for unflagging interest and enjoyment, a household of children, if things go reasonably well, certainly makes all other forms of success and achievement lose their importance by comparison. It may be true that he travels farthest who travels alone; but the goal thus reached is not worth reaching. And as for a life deliberately devoted to pleasure as an end — why, the greatest happiness is the happiness that comes as a by-product of striving to do what must be done, even though sorrow is met in the doing. There is a bit of homely philosophy, quoted by Squire Bill Widener, of Widener's Valley, Virginia, which sums up one's duty in life: "Do what you can, with what you've got, where you are."

Think for Yourself (1965)
Lyrics

Magic Burns
Variant: You don't cause problems. You cause catastrophes.