I was born in a middle class family. At one time, I was a girl who was talkative and confident. Friends around me envied me that l was always keeping a smile on my face and regarded me as a little happy swallow.     However, things have changed with the passage of time. In 2006, I failed to get into my ideal university. But I didn't want to give up, so I was determined to retake the exam in 2007. At that time, I was confident in showing my abilities.     Unfortunately, things didn't go well again. I can clearly remember that it was on August 15th of 2006 that my family received a bad news from my  s. It wasn't until then that I came to realize how much of burdens I have to bear. Having heard that my elder sister suffered from mental illness, I couldn't help crying in class. Reluctant to accept the fact, I often said to myself 'God is just playing with me. It can't be true.' For this reason, I had struggled with these difficulties for a long time. During the fourth year of senior life, I almost buried myself in great grief. As a result, I had no appetite for study any more, and I even gave up. Consequently, I failed, once more.     Looking back to the most difficult time, from 2006 to 2007, when I had no interests and low spirits every day, I often think how silly l was then. Happily, my elder sister is getting better and better under the considerate care of my family. Apart from this, thanks to my friends, l am trying to recover quickly. Gradually, I am adjusting to life in college and get along well with new dorm-mates.      Everyone who hears my story would feel sorry for my experience. I need no sympathy but I would rather have more care and encouragement. I am convinced that life will be different and meaningful if I make every effort to take challenges and meet them. What does the author mean by saying "I almost buried myself in great grief"?
She didn't want to meet anyone. She had a sorrowful mood. She didn't want to eat anything. She couldn't feel happy or hurt.