Let yourself become connected to a person, activity or an attitude that has made you uncomfortable, judgmental, defensive or hostile.
- Enjoy someone you’d thought was stupid or misled,
- see a movie you’d thought was childish,
- start a hobby you think belongs to the opposite gender, or
- check out a book you think is off‑limits.
For example: if you’re a guy, try knitting; ladies, let yourself learn how to change a tire.
Attitude, however is everything; break down a wall (“move a fence”) for the adventure of it, lightly, without great expectations.
If you do it to prove a point to someone else, it won’t be too useful.