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.
I began to understand that suffering and disappointments and melancholy are there not to vex us or cheapen us or deprive us of our dignity but to mature and transfigure us.
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