Obessive thoughts and triggers

I've been having a lingering problem.

Whenever I come across people or people watch, I obsessively think and assume how better they are than me in life.

It's like somehow what they do different is better than what I do.
Especially thinking people who are married and have kids are better than me.

I try to make myself feel better by saying some of those people don't know how to draw like me.

But I don't know how to stop comparing myself to them.

Also whenever I hear peeing or passing of gas, I feel a sensation in my mouth responding to the noises of those activities going on...
It's disturbing too.:/
I don't know if I should get medicine for this