self
The German word "Selbst" is a noun, pronoun, or adverb that can mean "self", "oneself", or "even". It is used to emphasize the subject of a sentence or to indicate that something is done by the subject itself. It can also be used as a reflexive pronoun to refer back to the subject of the sentence. For example, "Ich kann es selbst machen" means "I can do it myself". It is an important word to know when learning German, as it is used frequently in everyday conversation.
Even in darkness, I can see clearly.
This sentence uses 'Selbst' in a similar way to the English word 'even', to express an extreme situation that does not hinder some action or condition.
He does everything himself.
Here, 'Selbst' is used to emphasize that the person mentioned is performing all actions on his own, highlighting the aspect of autonomy.
You are your own worst enemy, even if you do not believe it.
In this case, 'Selbst' is used similarly to 'even', expressing a fact or statement that may be considered hard to accept or understand.