It sounds like you’re dealing with a lot of stress and anxiety, too, if you’re on a “hair trigger” with your emotions. Some self care and/or therapy may help with some of it, but you sound like you’re on the right track already. Try to be aware of when you feel that way, try to identify why the situation makes you feel that way, ask yourself what you can do in that situation too change anything, and try to view the situation from other perspectives (doesn’t have to be from the perspective of the person making you angry, but can be a stranger viewing the situation from the outside).
Best of luck to you! And keep in mind that by just wanting to improve yourself in this way, you’re already take a step more than most people!
Do you just mean the art showing them as the same size? Because that’s common in a lot of infovraphics to not be to scale if they are clearly labeled