The past is the past, try not to draw on negatives. You have a Goal! And the Goal is the End Result, think about what you need to deliver now,I was 2 weeks away from passing out when I left. It hurts like shit but as time goes on It will motivate me more to go back and finish. I would have finished only for certain consequences.
Focus and be positive, if you really want to you will succeed!
And have a sense of humour