Do you remember the story of Goldilocks and the three bears? I can't remember quite what the moral is, but something about finding the thing that's "just right?" Or is it a warning against trespassing on someone else's property? I may never know. But that feeling of "just right" is an undeniably good one. When the first sip of the beverage you ordered just feels right, or when you know you wore the right outfit for the occasion, or when you're sitting in a group of friends knowing you wouldn't want to be anywhere else.
You can't quite describe it, but you know it when you feel it. A sense of utter bliss and relaxation, of knowing you have nothing left to strive for. that you made it. You're done. I wish you could bottle that feeling and take a drink of it whenever you're uncomfortable. But maybe that's what meme lists are for.