Costly Lesson...

I have made a careless mistake and ruined my experiment. All the previous work goes into drain and the most terrible thing is, i have wasted a few thousand dollars. When i found out that my experiment was failed, i really hoped that it was merely a dream as the consequence was more than i could bear. But soon, reality sank in. Only god knew how upset and helpless i was. How i wished i could turn back the time. I could sense that my voice was trembling when i told my boss about it, and my palms were cold and clammy. My mind was actually blank but still, words came out. She was unhappy but was calmer than i would have expected. I feel really bad but i tell myself that i still need to move on. The most important thing is to learn from this mistake and never ever repeat it again in future. I am just a human being afterall...