Do not occupy your mind with the evil which is in the world, for if you do your mind will become like the evil with which it is occupied. If you think about Christ you will become Christ-like.
If you try to become better by your own strength you will find that you are utterly bad. If you do not think about your strength at all, but lean alone on Christ, you will find His grace to be sufficient for you.
Do not look on the dark side of the cloud (all clouds have a dark and a light side), and be offended when you are pointed to its silver edges. Keep your house in order, for the Lord is at hand. Send your treasures on to heaven, for heaven is your home. You will leave your riches behind you when you leave the world.