Easier Lot Tougher Things Michael Thinks Easy Realize

"That's easier said than done."
"It's a lot tougher than that. It's one of those things that are easier said than done."
"Michael thinks everything is so easy. He doesn't realize it's easier said than done."

A: "Do you do any stock trading?"
B: "No, but how hard could it be. Just buy when it goes down and sell when it goes up."
A: "It's easier said than done."

Other Common Sentences

"It's harder than you think."
"It's not as easy as you think."
"If you think it's that easy, why don't you do it?"