A summer job you hated still taught you one thing for sure: what you never want to do every day.

Knowing what you cannot stand is real information, not a wasted summer. Most people only learn the shape of a good fit by bumping into several bad ones, and each bump removes a large chunk of the field. The hatred is specific too, which makes it more useful than a general bad memory.

Write down what you actually hated, in features rather than job titles. The noise, the standing, the scripted sentences, having no say in the order of your own tasks. That list becomes a filter you can hold against the next job you apply for.