"If I am swallowed up in the bowels of negativity, and if the..." — Craig D. Lounsbrough quote meaning

If I am swallowed up in the bowels of negativity, and if the world seems eternally dark and forever foreboding it is likely that I have recklessly abandoned any notion of thankfulness. It is entirely likely that I have set the whole of my mind on what I don’t have, constructed the essence of my attitude around what hasn’t worked, and fashioned a vision for my future on the cold corpses of the many dreams that died horrific deaths. Yet, if I dare to be thankful for the fact that what I do have will always outweigh what I don’t, that everything that didn’t work places me one step closer to that which will, and that the death of one dream creates a space for the birth of a greater one, negativity will perish, light will dawn, and I will never fall to any of these things again.