don't get mad, get even
Channel your anger into revenge. When I heard that a co-worker had stolen my idea and presented it as his own, all I could think was, "Don't get mad, get even."
get even
To exact revenge or do something that one perceives as equalizing prior mistreatment. This prank may seem elaborate, but I need to get even with my brother for dumping a bucket of water on me the other day. Sheila swore that she would get even with me after she figured out that I had started the rumor about her. The best way to get even with the jerks from high school is to become successful.
get even
COMMON If you get even with someone who has hurt or insulted you, you get your revenge on them. He is so furious about their treatment of him that he's determined to get even. He'd leapt at this chance to get even with the guy who had taken his money.