Related:

• Do not let what you cannot do interfere with what you can do. -- John Woode
• Are you a parent? Do you sometimes find yourself unsure as to what to say in those awkward situations?
  Worry no more... Do as I say, not as I do. Do me a favour and don't tell me about it....
• WHAT DO YOU WANT TO DO WITH THAT!?!?!?!?!?!
• What can you do for me?
• ... you can do anything you want, but not everything you want.
• 1) If what you're doing is working, keep doing it.
  (2) If what you're doing is not working, stop doing it....
• I can do it all for you / But I don't want to.
• Bart: Lisa, will you keep it down? I'm making a crank phone call to Principal Skinner.
  Skinner: [on phone] Well, as a matter of fact, my refrigerator _wasn't_ running....
• What do you want from life? -- the Tube