I'M OK YOU'RE OK
Credit: (uncertain)

 NY Times CX      NY Times CX      NY Times CX
 Dec. 23, 1999       July 6, 2000         July 19, 2005
 Joe DiPietro          Patrick Berry       Trip Payne

Can you think of a four-word, popular expression to describe the clues below?

Joe DiPietro's clues:
(Puzzle title - Self-help classic)
2. Grilling technique
3. Type of argument

Patrick Berry's clues:
1. Blase remark after a defeat
2. "Game" played to get information
3. 1991 comedy of the sexes
4. Sporadic

Trip Payne's clues:
1. Everything can't work out perfectly
2. Tactic used during police questioning
3. It's one word against the other
4. Not continuous

The following are my own clues. #5 has four words, and #6 - 8 have six.

5. Things acquired without effort can be lost with no regrets
6. Compromise
7. Things have changed - get with it
8. Words you don't want to hear after a job interview

Answers:

1. Win some, lose some
2. Good cop, bad cop
3. He said, she said
4. On again, off again
5. Easy come, easy go
6. Give a little, take a little
7. That was then, this is now 
8. Don't call us, we'll call you