Both my sister and my mother had problems with mental illness and I mean to the level of psychosis. In talking with them, both told me that it was because they had been taught extreme versions of Christianity; there was a very high standard to meet in being a Christian, and they could not possibly achieve it no matter how hard they tried. Eventually they got over these extreme beliefs, but it was an emotionally difficult period for both of them. They were still Christian after they worked it all out. For my own self-defense, because I was taught the same extreme beliefs, I stopped being Christian until very recently, a four-decade break. I tried to be a good person but lacked what it took, and the concept of not being good would cause me to repress my feelings so that I could not work on myself to become a better person. I eventually came back because of this book: The Second Coming of Christ: The Resurrection of the Christ Within You.