<|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|>
Before taking any action, it would be beneficial for you to first take stock of the situation and assess why your coworker might be talking behind your back. It could be due to a genuine issue with your performance, or it could be out of malice or insecurity. Once you know the cause, you can take the necessary steps to address it. It may be helpful to speak with your coworker in a non-confrontational manner and ask them to stop. If the issue is a performance issue, then you should discuss how you can address it. It may also be beneficial to get a witness to observe the situation and take corrective measures if necessary.