Recently I made a mistake about my work, which I cannot blame on anyone but my carelessness. However everything happens for a reason. I suppose the reason for my distraction is at least partly due to my being in a relationship. Being in love turns out to be a pretty time-consuming  task, and it's hard for me to fully concentrate on my own work any more, in addtion i'm not a real hard worker after all. Therefore the result is that i made a mistake, and I understand all I said are excuses, so I need to focus on work as possible as I can.