Shamon, I had exactly the same experience however right slam in the middle of an internship at uni,
I just remember something changing and something being triggered, coping with depression heavily before I thought everything had turned around and I was just another statistic of young people who deal with it short term. Nope. I have just finished uni, 23, and struggled all the way through for the most part without a diagnosis of multiple things I may have, mainly chemical imbalances. Many people think that recovery is quick if you force yourself into situations and it really doesnt work like that, so yeah, like you, im now stuck in a rut, wanting to move on but i just can't and still don't know why.
I thought my story would give you support to know that others are going through similar.
tc xx Fem