As I grew older, there are certain things I have learned to enjoy more, such as slowness, inaction, loneliness, boredom.

Boredom is typically the most controversial, so the reason here is that boredom first allows for moments you want out of, but also there's more: It expands the range of comfort zone of emotions and sets the ground floor of your emotions low enough that you can actually welcome more experiences as rather good. That limits the number of "meh" moments drastically. Beware though that setting the ground floor of your emotions lower doesn't mean it lowers down the average "feeling of happiness" in your life.

The thing I reject the most today is the constant pressure for action, movement and performance. I used to love them though but now, nearing 40, I see them a way to escape rather than embrace what life has to offer.