When the job you trained for turns into everything but that

I trained to help people find knowledge and love books, and today I talked someone through a housing crisis, fixed three broken laptops, and gave a cold man a warm place to sit. The library has become a social worker's office, a tech help desk, and a shelter of last resort all at once. I care about these folks, but I was trained for none of this, and most days I feel in over my head.