One way is to know Guanyin, the goddess of mercy in Nanwu. If the karma is too heavy to avoid the nightmare, the horror in the dream will be conditioned to read Guanyin Bodhisattva, and you will wake up immediately. Another way is to pray before going to bed every day and help me when I am in danger. Master Da 'an: Before going to bed, recite the name of Amitabha for at least 10 to 15 minutes, and then pray twice. The first prayer is: My disciple has deep karma, but he is fortunate enough to hear about Buddhism, hoping that the Buddha will be merciful; The second prayer is not knowing that Buddha loves light. May the Buddha appear so that I can see it, Guanyin, Shi Zhi and all the bodhisattvas. The world there is pure and solemn, and light and beauty are equal, which shows me.
Then you will recite the Buddha's name in your mind and fall asleep quickly. Persevere in prayer, not only will there be no more nightmares and strange dreams, but there will also be Amitabha in the dream. Because the dharma reports of Amitabha are in our thoughts, we will know the thoughts of Amitabha. Amitabha is the wish of all sentient beings, and sincere prayer can correspond to the wish and heart of Buddha. Amitabha has the ability to do Buddhist things in his dreams.