A person who consistently speaks negatively about themselves may be displaying self-deprecation or self-deprecating behavior. This can be a sign of low self-esteem or a coping mechanism to deflect compliments or attention. It's important to address these negative thoughts and work on building self-confidence.
Posture.
The person is a trumpet soloist.
An altruist.
If the person completely isolates himself from society, he typically is called a hermit. He can also be referred to as a recluse.
Third Person
Yes, it's called an autobiography?
A narcissist and more extreme would be psychopath
A person who studies the field of geology and earns the degree can call himself a geologist.
A hypocrite
The person that suffered of mental disorder and hurts himself is called "self-injurer"
a person indulge himself in the trading of particular business is called trading entreprenuer
The last attack of rusbcketis called Event Horizon.It can completely negates all incoming damage for 12 secondes.