" As we go through life, the experiences we encounter depend largely upon our own minds. Tibetan Buddhism teaches that the mind does not passively receive images of the world but actually creates and projects them onto the sense impressions of bare reality, using its store of memories and habitual traits. For this reason, few of us ever experience reality as it is in actuality, but instead overlay it with a host of our own projections. These projections are usually negative in nature.

According to our level of inner growth, we may be able to modify these self-created visions into forms and images that are more conducive to our spiritual health and growth. Their hallucinatory nature becomes more apparent at the time of death as well as when we become more accomplished in meditation.

In only we can let go of our needs and fears, then we can come to terms with such projections. If we can let go, we will come to rest in the natural state of the mind. For this profound experience to occur, our confused minds must be soothed and all our fears pacified by the compassion and skill of our spiritual friends and guides. "

― Jeffrey M. Schwartz , The Mind and the Brain: Neuroplasticity and the Power of Mental Force