"Know ye that ye must come to the knowledge of your fathers, and repent of all your sins and iniquities, and believe in Jesus Christ, that he is the Son of God, and that he was slain by the Jews, and by the power of the Father he hath risen again, whereby he hath gained the victory over the grave; and also in him is the sting of death swallowed up."
I think one of the most comforting things in the scriptures is right here. We are here in mortality, and as we go throughout our lives and experience age, death, and the fear of both... knowing that Christ has gained the victory makes all the difference. We have the knowledge that death is not permanent, and that we will see those we love again... and that they are happy, now, where they are. In this life we have pains and fears, but they are beyond that. That knowledge can change our focus from suffering to determination... from despair to hope... from pain to joy. I'm not saying it is easy... or that the sting of death it talks about above isn't there... but the point is that the reality of Christ swallows it up. We feel the pain, but the joy of Christ triumphs over it, and gives us a reason to rejoice and live and love, no matter how hard things are now. Bad and tragic things happen... but we can go on, because the good and astounding things make it worth it. Death can't have any of us in the end. We belong to our Saviour and King, who will ever triumph.