Its like you people are reading my mind!!!
Eman, as a born--into-it, pushing 40, I have the same questions. I notice most of the ones that are replying in the affirmative to your question are much younger(I'm looking at you, Tink!!)
So many things that have been missed, most of which are simply no longer attainable. A person has grown up with all the promises dangled in front of them, only now to realize what a fantasy it all was. Yes, you can go on, you can start over. But how do you reconcile to the fact that arguably your very best years were wasted, and now they are gone? How do you cope with the idea that you are not going to cheat death, you are getting older, that this life is all there is?????
I also appreciate the quote on goals you posted. the part about depression being a result is very true.