What is tyranny over the soul?

In matters of faith, tyranny over the soul has long been one of the great stumbling blocks of the world. 

Look carefully into your own heart and examine your own shortcomings and delinquencies if you would be faithful in your examination of your inner life.

To remedy this evil, much self-examination, self-knowledge and self-correction is necessary. One must succeed the other. 

Work for yourself now that you may not have to do it hereafter. 

It is much easier to reform yourself in this life than in the future life; so much of your future enjoyment depends on your following out to reform yourself in this life. Remember that.