I notice I get anxious alot during the day because of small things (whether that be a small mistake or minor argument with someone). I overthink these things so much that my day starts to revolve around the issue. In these cases when something happens I know its in the past and nothing can be changed, but my brain is constantly replaying the events over and over again, wishing it had happened in a different way. 

I wish my mind could "forget" these things happened and kinda just move on so it doesn't ruin my whole week... Does anyone have tips on how to do this?