Thinking of cutting loses

Well, I have become one of the thousands of nursing students who has reached that point of no return, thinking if it is worth it...

Anyways, I will spare you the details, and tell that I failed my clinical mid-term. The final grade is due in 2 weeks (I am in a 12 month accelerated), so I have very little time to implement a laundry list of improvements to hopefully get a pass on my clinical's final. However, after I got the mid-term fail, I have been literally feeling like giving up. At times I sit in solitude and think if I had made the right choice. I had been a successful teacher for a decade prior to starting nursing school. I am 33, and have nothing to show up for, if I fail. I have 6 more months to go before graduation, but each day seems so impossible for me.

Also, I am the only one in my clinical group who failed midterm. Right now I find myself unable to even make myself do anything. My morale is low, and depression is becoming a reality. The most terrible thing, though, is, I was not that upset with my failing the mid-term; on the contrary, I felt somewhat a relief. I tend to find myself a few times catching myself making silliest of mistakes. Then I wonder the mistakes I make here will inevitably impact someone's health in the future, should I make a nurse.

I realize I have been rumbling without reaching the point. I guess I have no clue as to what I really need to do. I have been thinking of cutting my loses and just go back to teaching...But if I do, that means I have wasted 3 years of my life doing nursing....and the only legacy of all this time wasting is that I am 3 years older and $15,000 more in debt. I am not sure what to do....