The standard word is masochism, but please read on. There are different reasons why a person would hurt him or herself, and it wouldn't really be appropriate to call them all 'masochism'. This word has to do more with causing self pain or humiliation as part of mental disorders called paraphilias. In other words, the pain or humiliation is a way to enhance sexual pleasure. There are people who hurt themselves for other reasons. For example, cutting behavior is sometimes seen as a strategy to reduce anxiety. It really wouldn't be right to refer to this kind of behavior as masochism.
The person that suffered of mental disorder and hurts himself is called "self-injurer"
You would call a person who praises himself a lot a narcissist.
a person who tells proudly about himself is a boaster or a braggart.
I would rather say that if the person talks about how intelligent they are then i for an adult call it conceded.
hungry
Poor!
Wilhelm Wundt (1832-1920) was the first person to call himself a psychologist. In 1879, he founded one of the first psychological laboratories in Leipzig, Germany.
Pierre-Joseph Proudhon
a specialist
A hermit
A hermit
Doomed