This is the 276th most frequent Dutch word.
zichzelf
"Zichzelf" means "oneself" in English.
In this sentence, 'zichzelf' (himself) refers to the reflective form of 'Hij' (he), signifying the object of the action is the subject.
Hij ziet zichzelf in de spiegel.
He sees himself in the mirror.
Here, 'zichzelf' (herself) is the object of the phrase, pointing to the subject 'Ze' (she) for self-acceptance.
Ze heeft geleerd om zichzelf te accepteren.
She has learned to accept herself.
In this case, 'zichzelf' (itself) represents the subject 'Het dier' (the animal) in a reflexive context.