I absolutely loathe them. Some of my worst are:
"I don't have a magic wand" (lazy psychs)
"We're all in this together" (no we're not)
"Think positively" (respect to FMP but in my case it's best to think realistically)
"You must reach out for help" (fine if you have an accessible and reliable source..not many do)
"Be kind" (fat lot of good with major issues)
Anyone else have any that they want to disclose?