How do you get over frustration when something is stolen from you?

Last week I had a large amount of brand new clothes stolen from my dorm washing machine, a few days ago something very vauluable was also stolen from my house/dorm, and today I bought a much needed pack of tampons, put it on my desk and now it’s gone.

I’m feeling frustrated, angry and now very exhausted. Everyone I ask for help to find some of these things has told me that it’s a lost cause to search for it, which it might be.

How do you guys get over the grief of having something stolen?
Does your level of trust go down?