How do I stop overthinking?

Me and my cousin had a small chat. When i told my elder sister about the things we talked about. She pointed out that i sounded 'less ambitious'. i thought about it and found that it was true. due to my social anxiety, my communication skills arent that good. Now my brain just overthinks and keeps on rewinding that chat. i try to stop thinking about that but it agains comes back to my brain. i cant concentrate on my studies due to this. it was approximately after3 -4 days that i had any social interaction coz I spent the last few days inside my house without meeting with anyone and simply studying the whole day. now that i tried to have some interaction, my communication skills has pulled me down. I keep on overthinking about this and i want it to stop. if anybody has any advice/suggestion that can be helpful, please share.

thanks

[hypercat54]

There is nothing wrong with not being ambitious as many people aren't. So don't worry about it.

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I hate when it happens to me, repeating that conversation once and again and again in my head. What I found it helps me is to do sport: go running, challenging poses of yoga, anything that make me concentrate in my breath because it is medium to high demanding. When my body is tired, my mind stops bothering me.