Always feeling upset about our sibling

I don’t think what’s up with our sibling, however he is consistently doing something crazy, but a long time ago he consistently spoke of how he was going to open his own Heating and A/C dealership one day. He never genuinely went to an Heating and A/C trade college to become certified, however he did minor repairs for people on Heating and A/C systems. He consistently insisted that he maintain his own Heating and A/C idea plus he did alright with the maintenance! When he asked me if I wanted help with our Heating and A/C maintenance, I said I was okay. I genuinely already had an Heating and A/C maintenance idea with our Heating and A/C company plus those men did good work. My sibling said it was a immense waste of money, plus he could do a better task, although I still declined his services. Then one day he went to work on his Heating and A/C idea plus he electrocuted himself because he didn’t shut off the power to the Heating and A/C unit, however fortunately, he’s still alive plus okay, however he scared everybody in the family, and both of us have all been telling him that he shouldn’t be working on his own Heating and A/C although he tries to tell everybody that he knows what he’s doing. I assume if he had gone to college, he might have done alright in the Heating and A/C industry. The thing is, he just acts love he knows everything when it comes to heating plus cooling, when he clearly is no good at this style of work. I mean, basic maintenance is okay with him, however he needs professional tune-ups from time to time. I just can’t seem to get that into his head plus I’m worried he’s going to get destructiond or ruin his Heating and A/C equipment.

furnace filter