I feel that the best thing we can do is simply live our life to the fullest, in harmony with each other best we can, and to cherish every moment that we have here. This very well may be the only life as this one we may have, which is why we have to make the best of it. But even dying is a part of life, strange as it may sound, as each being that lives has its time and then must move on so another can have its. Worrying about such only burns that time quicker.
Now, that isn't to say one shouldn't ever worry, we should. It's natural to hold fear of what may be or what is. And that isn't to say one shouldn't ever contemplate, because we should do that as well. But we must try to overcome what fears and worries we have so that they can no longer stop us from moving further. We must try to learn to answer the "whys" of our being, but also accept that some may never have any clear defined answer, or is better left without one. We must try to view the past so we may better see our present and future, but not let that viewing hinder us from continuing. Not every moment is going to be wonderful and not every moment is going to go as slow as we may like, but that doesn't mean that each can't hold Love. Time, life, and Love are three delicate, precious things and when they live in balance none can be wasted.