This may sound weird to you Amanda, since I am not a Christian per se, but when I read the meaning behind your words I see that I am trying to take the exact same approach. I have a personal spirituality that is strongly influenced by Buddhism, and I see suffering and loss as a potential opportunity to build my compassion and lovingkindness. I also see it as a way to outgrow my ego and my addictions to my own plans, and an opportunity to embrace life as it REALLY is with all its suffering and uncertainty. When I almost died from the massive blood loss of my ectopic, I had to realize that not just my baby-to-be, but my WHOLE LIFE could have been taken away, just like that, and so much for all my busy plans, so much for all the things I always thought I'd do "later". Although I have had a lot of fear and anxiety to overcome in the aftermath of the experience, I've also found a lot of peace. The importance of just "being here now" - to just exist in the current moment, without concern for past or future - has come home for me in a way that I've never experienced before. My currently uncertain situation has also been an opportunity to practice being present, open, and loving in each moment, to let go of the things I have no control over. It's VERY TOUGH but good practice. After all, when I think about some of the things that used to stress me out, I have to laugh.
I think in a way, the challenges we face with our losses are like a summons to spiritual boot camp.