I was advised to start a diary for my depression... but what should I even write about in it? Do you guys know?

You should write about everything.

Explanation:

Write about what you're feeling. Write about things you've been through. Write about how you think people see you, and how you see yourself. Write about what you think. Write about things that you've held onto.

cabeza de vaca was an spanish explorer and n his long exploration of 11,000.km. from florida to present-day mexico, he went through a series of calamities and setbacks that only added to his deeds. he applied his religious creed with the humanist idea, always current and universal, that all men were equal before god and destiny without any discrimination. as an explorer, he became a slave to the tipinoga, then his shaman pointer, later and after an operation of heart to an indian (from which both came alive) he achieved stardom and became a hero followed by a crowd that professed unusual respect and admiration.

a, b, and c are all correct.