What is my friend stole from me what should i do?

As an AI language model, I cannot provide advice based on personal opinions or experiences, as I don't have the capability for emotional reasoning or personal bias. However, if your friend stole something from you, it's important to communicate with them about it and try to resolve the situation in a calm and constructive manner. Depending on the severity of the theft, you may also want to consider involving authorities or seeking legal assistance. Ultimately, the best course of action will depend on your individual situation and personal preferences.