We all have a lot of subconscious biases that end up a lot like this but rarely or never voiced. "I'm not the kind of person that goes dancing" "I drink a soda with every meal" "these are the only kinds of clothes that I wear" and you have a built up set of things you do and don't do and without reflection.

Then you can think about it and feel silly "why did I never do this before" or "why do I always do this". It's a good exercise to go looking for your unconscious biases and assumptions about yourself – eliminating these identifying behaviors can really be a benefit.