Duty or Friendship

I personally think that my friend is more important than my duty. Betraying my friend is worse than betraying my duty, because friendship cracks when friend doesn't believe in me anymore, though my friend might pretend nothing happens. Friendship is fragile as glass, though we can always repair it when the glass crashes, the crack is indelible. However, duty is also significant. Duty is the task that I am responsible to accomplish. I can't just leave duty behind because I am lackadaisical. People believe me so they appoint the tasks to me. Therefore, I'll try my best to maintain both friendship and duty. If I am forced to make a choice between betraying friend or duty, I'll select duty because it represents practicality while I am more sensitive. I will make up my duty after apologizing my mistakes, in which I still have chances to rectify my error. However, there is almost 0 percent to fix the crack between friendship because the betrayal will always leave a lump in friendship and engulf it gradually. Hence, I believe that betraying friendship is worse than betraying duty.