Sometimes our tempers will hit the roof for reasons trivial but there are people you can't be mad at. Because losing our temper is just not good for health. Yes, let's go with that. Here's a list of folks you shouldn't be mad at: 

People You Don't Know
Today I saw a man doing this in a bus: he was trying to explain to the person in his neighboring seat that he had gotten the meaning of his name all wrong. The man replied that that he knew what his name meant, but the guy kept on jabbering. It was comical, yes, but really annoying for the guy. At one point, he started completely ignoring the man (which obviously didn't stop him). You don't want to be that guy. 

The Driver
Or anyone behind the wheel. Don't haggle about the fare with them after you get on the CNG/ rickshaw. Don't tell them they are cheats and are ripping you off, don't tell them you take this route every day and know the fare even if you don't. Don't blow off steam about him while you're on his vehicle. They might be behind the wheel, but they can hear you. Settle on the fare before embarking. 

The Bus Conductor
Just give the man the fare he wants. Also, don't tell him you're a “student” if you look like a 45-year-old insurance salesman. He'll not believe you so you can't get away with giving half the fare. The job's tough, and they spend all day asking for fares from the customers in a cramped bus. Don't let yourself go psycho on them just because they told you to wait for the change. 

The Barber    
They are very dangerous people. Do not complain about the condition of the salon when you are there. Remember: you are very vulnerable when seated with a white cloth wrapped round you. A white cloth can mean anything. Don't berate him for refusing to cut your armpit hair. They have rights. 

The Doctor
It's not the doctor's fault that you think you have every disease you can think of. If they'd be operating on you, it is better you be extra nice to them. You don't want to have “moron” seared on your heart with argon gas. Don't try to do his job either by demanding certain medication. You don't have a degree in medicine, they do.

Fanboys 
It's simply not worth your time lashing out at someone saying that the 11th Doctor was the best Doctor Who in some scarring fan forum. You have other important stuff in your life. Do that.

The Internet People
You know why.