Learning to Embrace

Today early in the morning I went to class as usual but the lecture was late for more than an hour. How tolerate it is! Today I learn to embrace things that are not perfect. Nothing in this world is perfect, we are human being and sinners, that's why we easily fall into the trap of the world.
Why do I say I'm learnt to embrace?I've been studying and following the education ever since I was young and now I'm in university which lots of things I really need to be patience with it and learn to give and take. Probably this is so called the process that God is training me into something he wants me to be.
As I kept staying here in this place, the discouragement and disappointment become more and more overwhelming for me.
What is wrong with me?or with the system here?I should change my thoughts but why is it so hard?