I did no wrong, why do my situations pain me?

All of us come to play this drama of life with these two things- 1. Destiny and 2. Free Will. Destiny is pre-ordained, it can't be changed or edited. It's like the score we get after we have written our exam. Once done, we can't re-write. While my Destiny is subjecting me to difficult times today but I will endure and use my free will to do the right things (right actions-words-thoughts) to get better results tomorrow, to cultivate a better Destiny for my self, tomorrow.