> Doing that hobby you were always to nervous too try? probably a good source of discomfort to feel.

> Taking sky diving lessons from the sketchy guy who is not really certified? That is probably the bad type of discomfort and you should listen to it.

People who already know how to tell the difference between these two doesn't need the advice though. In order to try a new hobby you need to do a lot of work to understand what is sketchy and what is not, how to not get tricked etc, so much money is made tricking wannabe hobbyists in every domain. Selling them expensive shoes and gear etc, that they wont need and barely use.

Discomfort is not discrete but continuous. I don't think you grow by maximizing discomfort infinitely. You'll still need capacity to handle and learn from it.

Instead I read this as leaving your comfort zone to the level that you are ... eh ... comfortable with.