Drive 'em crazy.
Revenge always sounds like a good idea.
I can't tell you how many nights I've stayed up fantasizing about dumping a box of nachos on my ex's head or throwing a glass of champagne in face of mean girl I went to high school with.
The whole humiliating route of 'getting even' is very tempting — especially when you've been really hurt by someone.
But I'm hear to tell you the obvious: getting revenge is never a good idea, but getting happy is.
The most irritating way to get back at someone is to ignore them all together, and focus on how to live the best life you can.
No matter what you do in life, you'll probably end up with a few enemies. People who want nothing more than to see you fail.
Don't give them the satisfaction of getting your attention.
Be happy and focus on what you want to achieve. Making the most out of every aspect of your life is by far the easiest way to get under their skin.
So let go of the idea that you need to prove something. Get rid of the mindset that this person has any influence over any of your decisions.
Take the energy you want to spend sticking their face in mud and use it to create the best, happiest life you've ever had.
It'll drive them nuts.