My last piano lesson

I didn't realize that today is the last time I have my piano lesson until my teacher told me so at the end of the class. I was shocked, and had "bunch of " feelings.
At the very beginning, I was shocked, didn't know how to react. And feel very regret that why didn't I practice more this week.
Then, I 醒覺 that this is just like what is going to happen on the day Jesus come again. You don't realize the day is coming, yet when it comes, it is too late to do anything to compensate for the loss. When you realize, it is too late...... when you want to show your "report card", there is nothing to show........ because everything is too late now...... just as I don't have any pieces done in these few months....
After all that, there is a flux of 失落感. This is a bit similar to the feeling of 失戀。 (P.S. 失戀 not necessarily = 分手) 想起多年前的一首歌：明年今日，忽然好有feel.....
人總需要勇敢生存 我還是重新許願 例如學會 承受失戀
明年今日 別要再失眠 床褥都改變 如果有幸會面
或在同伴新婚的盛宴 惶惑地等待你出現
明年今日 別了你一年 誰捨得改變 離開你六十年
但願能認得出你的子女 臨別亦聽得到你講再見