Stuck In A Rut

I need to snap out of this funk I am currently stuck in, and fast, because it is killing me.  I'm going about my days in a fog, mostly fighting tears, sometimes utterly and dangerously ambivalent about everything - myself, my job, the people in my life.
I can't live my life this way.
Something a friend said to me the other day has been stuck in my head.  While I was trying to convey my horror that I'm 30 years old and I've yet to find my place in the world while everyone around me seems to have it all together, they looked me and said "It's like...it's like you're racing!  It's like you're racing towards...death!"  At first I thought I wasn't making sense with what I was trying to say, because, to be completely honest, I'm terrified by the idea of my own mortality.  I brushed the comment aside at the time, but it keeps creeping back into my mind.
Is that what I'm doing?