As Quora user Joos Meyer explains in response to the question, "What uncomfortable things such as cold showers can improve your life?" pushing your comfort zone is the key to self-betterment.
"I think the best methodology is to every day or week set a task or find a situation that makes you slightly uncomfortable. Do that thing. This will incorporate the experience into your model of 'normality' and hence expand your 'comfort zone,'" he writes.
Here are some uncomfortable things that other Quora users say have helped them grow: