Sense

Do know that people always notice the change in your behavior towards them and never  believe it's their behavior that made you to change your attitude towards them

They refuse to remove the specs in their own eyes

I'm a mathematician I love crypto and also doing research.

You are very wise to say this, they will only see your changes.

It depends sha cause what if your behavior changed because you haven’t eaten??

They only check others without checking themselves

Exactly 
I do tell people to check themselves before complaining about someone else