Walk to the bookstore section you never visit and stay ten minutes. Learning what bores you is self-knowledge too.

Knowing where your interest stops is as useful as knowing where it starts, and much faster to establish. Ten minutes in a section you would never choose tells you whether the avoidance was a real preference or just unfamiliarity, and sometimes you are wrong about which. A clear no also saves you years of pretending to like things you think you should. Boredom is data rather than a failure of character.

Try it this week, in a shop or a library: pick the aisle you have walked past a hundred times. Give it ten minutes and one book, properly opened. Then say which it was, dull or merely unknown.