A theology of failure?

I came across a quote from Paul Tillich that just appeals to me and my experience of life.  Here it is.

"Grace strikes us when we are in great pain and restlessness.  It strikes us when we walk through the dark valley of a meaningless and empty life. ...  It strikes us when our disgust for our own being, our indifference, our weakness, our hostility, and our lack of direction and composure have become intolerable to us.  It strikes us when, year after year, the longed-for perfection of life does not appear, when the old compulsions reign within us as they have for decades, when despair destroys all joy and courage."

Is this a theology of failure?  I don't think so.  It more captures our naked reality and speaks to it as it is.  It speaks to our confusion and chaos, helping us make sense of what is and not of some hoped for or proclaimed ideal which never seems to come. It speaks to the 'eternal Why' of our life - why am I still doing this?  why am I still like this? 

It speaks to me in the midst of another week which is just so demanding and full of so many challenges. 

Thanks Paul Tillich