<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
My coworker often talks behind my back about my shortcomings.  I want a revenge.  Please help.
<|assistant|>
It can be extremely frustrating when a coworker speaks negatively about you behind your back. Before taking any action, it might be helpful to try and understand what your coworker's motivations might be. It's possible that they are attempting to highlight areas of improvement or trying to seek help or advice, albeit in the wrong manner. Consider engaging in a thoughtful conversation in a professional context and clarify if your coworker is expressing genuine frustration or is truly trying to be malicious. Only then can you decide on the appropriate course of action.