I wouldn’t tell you to lose weight quickly, because you already know you can.
I wouldn’t tell you to make the change you want now, because you can make the change at any time.
I wouldn’t tell you to quickly understand this pattern because I know you already know it. Although I’ve told you I’m not going to tell you, I’m going to tell you anyway and then give you a reason to take your mind of the embedded command in the statement.
*Note: Not to be confused with the “I wasn’t going to tell you, but…” destroyer which will create resistance.