1. used as the object of a verb or preposition when the male subject of the sentence is also the object
Usage: reflexive pronoun
2. used to emphasize a male person as the subject
Usage: emphatic pronoun
3. his normal or usual self
Usage: used after ‘be’ or similar verbs

Examples

• He cut himself while shaving.
• The boy taught himself to play guitar.
• He bought himself a new car.
• The president himself attended the meeting.
• He wasn’t feeling like himself after the accident.
• John lives by himself in the apartment.
• He kept the secret to himself.