Stuck in Reverse

"...when you try your best but you don't succeed" 

      I'm so frustrated right now because I'm literally stuck in reverse no matter how hard I try or do my very best I can't seem to win or to catch a break. It's really getting to me to the point where is mining my self esteem, affecting my dreams and goals. It's making lose my hope and my faith. Because I can't comprehend it, I just can't. I'm giving my all, my very best. I try my hardest and yet the results are not showing. And no this not about a guy or nothing romantic, is about my life, about how I strive to be the best can be, give out by best and yet the outcome is not the best not even average. I'm so exhausted (which I've said like 100 already in previous post) but I really am. I don't know how much longer I can keep on "pressing on", I tell myself not be dismay and to not ever think about giving up but as of lately it sounds like what I need.