How do you get rid of theta?

I'm curious, could you explain to me how one might get rid of theta? Is it a simple process, or does it require a certain level of expertise? I've heard some rumors that it involves selling on exchanges, but I'm not entirely sure. Could you elaborate on the steps involved? Is there a specific strategy or tactic that you recommend? Also, are there any risks or considerations I should be aware of before proceeding? Your insights would be greatly appreciated.