Lama Ole’s answer:
All disturbing feelings arise from ignorance. Ignorance is the fundamental inability of mind to see that the one experiencing, that which is experienced, and the experience itself complement one another—that space and its clarity are the same everywhere. Unfortunately, one mistakes space for an “I” and thinks that the clarity—all that appears in space—is a “you.” Out of this separation, the disturbing feelings arise.
We develop attachment to what we want and aversion against what we dislike. From attachment, desire and greed arise, and from aversion, hate and jealousy arise. Likewise, from ignorance—from stupidity—appears pride; one thinks of oneself as something real and important, even though one might die at any moment.
The Buddha teaches that there are 84,000 combinations of these basic disturbing emotions. They all lead to harmful actions and words, which again produce bad results. This suffering makes us believe that the world is against us. Then bad actions arise again, and the cycle continues on and on.
Because of Christianity, we here in the West believe that “clear” things cannot be holy. We think there can only be miracles if we leave things unclear, if they are a little bit mystical. But in Buddhism, we want to make everything as clear as possible! It is good to look at things carefully, to doubt, to differentiate, to be critical. This is how one becomes a really good Buddhist. Buddha explains the way things are, but the experience we must gain ourselves. It’s only unwise if we doubt the same things again and again. When we have resolved a doubt—and thus learnt something—we simply move on. But it is good to examine everything critically.
Whoever is critical in the beginning is like a diamond in the end: indestructible and clear. One has sorted out all doubts and internalized the essence of the teachings. Whoever is full of love and desire at first will be like a lotus flower in the end: open to everything.
People belong to different buddha families:
The transformation of anger is the diamond family.
The transformation of pride is the jewel family.
The transformation of attachment is the lotus family.
The transformation of jealousy is the action family.
The transformation of stupidity is the buddha family.
The strongest disturbing feeling—whatever puts the most stones in one’s way—is at the same time the best raw material for enlightenment.