I know how depressing it is! I'm 40 with 2 kids and I had a great job in a hospital and unfortunately a preceptor who in general was not liked by anyone and not only ate her young she was the " HANNIBAL " of nurses. I stood up to her after 4 months of pure hell and then was forced to resign because it was either me or her! Its funny because i teach my kids to stand up to bullies but i NEVER thought i would have to! I was the new one so it didn't matter how right I was ! Talk about depression!!! Your not alone and it's a struggle but there has to be something more for both of us!!!
Sigh, I'm just going to put this out there. If your grammar on here is any reflection of your grammar on an application, it may very well lead you to a clue as to why you haven't been invited to an interview. On second thought; it took me 1½ years to become gainfully employed as an RN. "If at first you don't succeed, try try again." Perseverance pays off. Good luck.