In a recent conference held by my church one of the speakers helped me answer this question in a profound way.
On some level I need the endings. I need to experience these moments. I need the loss. I need the change. It is these things that create opposition, it's from these experiences that I come to know who I am. I am able to recognize my character and more fully define it.
I have experienced the ending of good health a chronic illness of a parent brings; the death of a loved one; the ending moving far from home with little contact with family for over a year is; breakups, heartaches and sorrows life brings. Some of these things I am experiencing now. All of these things have forced me to change, grow and grieve at the endings they create. Yet I am forced to admit that I wouldn't give them up. Not for anything. I would not trade the refining fire they have been and what I am now for all the riches of the world.
I was once talking with one of my dear friends who has had family trouble for most of her life. We were discussing how her family has suffered due to their own poor choices and how I have watched my family suffer due to health problems. We paused for a moment and considered if we would trade struggles straight across. It surprised me to realize that she didn't want mine and I didn't want hers. I'd rather have the ones I've been given.
Paul, in the scriptures, said, "Beloved, think it not strange concerning the fiery trial which is to try you, as though some strange happened unto you: But rejoice, inasmuch as ye are partakers of Christ's sufferings; that, when his glory shall be revealed, ye may be glad also with exceeding joy" (1 Peter 4:12-13)
Christ suffered to better "succor his people" (Alma 7:11). He suffered to better understand us and our needs. Is it any wonder then that we must suffer as well, partake in some small way of his sorrow in Gethsemane to better know Him?
So as I face the endings in my life, as I change and the world changes around me, I will seek an eternal perspective. Cuz lifes not over yet.