My little brother is so arrogant

My younger brother is a heating and cooling systems specialist, here in town, and he is very good at what he does. But whatever you do, never compliment him. He is entirely the most conceited person I have ever met in my life. If you provide him a small compliment, he just takes it and runs with it. He works as an HVAC guy for a large HVAC contractor here in town. He thinks he is the best heating and cooling repair man that has ever walked the earth! My brother has always been this way, a bit conceited, and it has always been annoying to me. I don’t know why he is like this! Our sisters and our older brother are not like this, and neither am I. It’s just our younger brother, and he is getting worse and worse all the time. He just so happened to win a sales contest at the Heating and Air Conditioning supplier where he works last year, and now he is impossible to be around. Now, not only is he the best heating and air conditioning repair man in the world, he thinks, but he’s also the best salesperson in the world! I can hardly even stand to be around him anymore. He is literally driving me crazy with the way he acts these days! It’s annoying to other people too, but I’m starting to think that our brother doesn’t even notice it most of the time. The fact he doesn’t notice this about himself makes it even worse.

a/c tune up