The best thing to do to prepare for death is to practice patience, love, and compassion in your daily life. Practice patience whenever you can so that anger doesn’t arise; train yourself in pure love so that attachment doesn’t arise; check your ego so that its grip of fear is destroyed; and try as much as possible to develop unconditional love and compassion. If you can do that every day, then you won’t panic at the time of death. Positive thoughts will become a habit and will arise naturally.