The Lord is great. He loves us, He wants us to be happy, and He wants us to be like Him. It is not easy, and we will mess up, but that doesn't mean we are lost. He will always do what is best for us, even if we cannot understand how or why.
I know that if every day each of us were to try a little harder to be a little better, that we would succeed, we would be happier, and the world would be a much nicer place, both because of our perception and the effect we would have on it.