Suffering has been stronger than all other teaching, and has taught me to understand what your heart used to be. I have been bent and broken, but - I hope - into a better shape.
But theoretical, imagined suffering is not what distresses a man and destroys his peace of mind. Only what you have seen with pitying eyes can really shake you.
We don't really learn anything properly until there is a problem, until we are in pain, until something fails to go as we had hoped... we suffer, therefore we think.
In accepting that suffering is a part of your daily existence, you could begin by examining the factors that normally give rise of feelings of discontent and mental unhappiness.
On Destiny: "Our destiny exercises its influence over us even when, as yet, we have not learned its nature: it is our future that lays down the law of our today."
Human, All Too Human