myself
US /maɪˈself/
UK /maɪˈself/

1.
mí mismo, me
used by a speaker or writer to refer to himself or herself as the object of a verb or preposition when they are also the subject of the clause
:
•
I saw myself in the mirror.
Me vi a mí mismo en el espejo.
•
I bought a present for myself.
Me compré un regalo a mí mismo.
2.
yo mismo, personalmente
used to emphasize the speaker or writer
:
•
I'll do it myself.
Lo haré yo mismo.
•
I, myself, witnessed the event.
Yo mismo, presencié el evento.