What's happening to you is the workings of infinity. Your sensation of nervousness is due to the subliminal realization that your time is up. You are aware of it, but not deliberately conscious of it. You feel the absence of time, and that makes you impatient. I know this, for it happened to me and to all the sorcerers of my lineage. At a given time, a whole era in my life, or their lives, ended. Now it's your turn. You have simply run out of time.
Your malady is a very simple one: your world is coming to an end. It is the end of an era for you. Do you think that the world you have known all your life is going to leave you peacefully, without any fuss or muss? No! It will wriggle underneath you, and hit you with its tail.