The Four Reminders can help with facing the reality and preciousness of a human life, the importance of impermanence, and the imminence of death:
Ringu Tulku’s words on the Four Reminders, from the Ngondro book:
“Precious human life endowed with every freedom and assets. It is difficult to get and can be easily destroyed, so now is the time to make it meaningful.
The universe and everything that lives therein is impermanent, particularly the lives of beings, who are like water bubbles. The time of death is uncertain, and when you die, you will become a corpse. Dharma will help you at that time, therefore practise it diligently now.
Thirdly, after your death you will have to experience your own karma, having no degree over what happens.
So give up harmful actions, all your time should be spent in the practice of virtue. Thinking this way, evaluate your life daily.
Your are constantly tormented by the three kinds of sufferings. Therefore, samsaric places, friends, pleasures and possessions are like a party given by an executioner, who will lead you to the place of execution. Cutting through the snares of attachment, strive for enlightenment with diligence.