The harm caused by guilt & selfishness.

"Don't fall into the habit of thinking too much about yourself.  When you put yourself in the center of all your thoughts, to the exclusion 

of everyone else, you are close to 

committing personality suicide."

"Guilt can actually plant the seeds of sickness in the soul, a sickness that proceeds to damage the mind and, in time, the body.  If a personal has fallen into a pattern of conduct that causes guilt feelings, such a behavior pattern should be discarded, and discarded quickly, if the individual wishes to remain in good health."