Avoiding problems doesn't make them go away - you think it does, but it really doesn't. They're just postponed. Those problems just stay inside your subconscious and brew until your body gets to a point where it's had enough and decides to release some of the stress itself. That's what an anxiety attack is! It happens when you don't know how to vent your frustration, fears, stress, sadness, madness, whatever it is that bothers you, the things you should be confronting and getting closure with. If you don't confront these things and deal with them, your body does it for you.