It's that kind of feeling you can never describe. Yes, that feeling. Technically, it's not an only one. It is, basically, a conjunction of many and completely different emotions. They run through your head and torture your body and mind simultaneously, gathering all of those memories that keep your eye awake. They remind you of all those things you've done that you don't regret, but wouldn't repeat nor remember.
Standing still is a tough exercise of endurance. Moving on or staying in is not one's choice but everyone's.