Anyone else has issues following conversations?

Today I sat through a 3 hour meeting and I remember nothing. I am a smart guy but I can’t follow conversation that aren’t 1-to-1 or where I can’t talk all the time at all. I try I really do but somehow my mind wonders off so quickly.

I think the root cause was the bullying I experienced when I was younger which made it so that I can’t focus. Anyone had a similar experience?