I was disappointed in myself.....

As I said yesterday, I had English time with some English-lover fellows at my house. Then we read an article, learned several vocabs and phrases. The time was most valuable, however, at the time I was disappointed in myself.....
During the time, we often picked up synonyms we'd learned each and questioned the words.
To my disappointment, I couldn't remember clearly....(T T).....I had only vague remembrance of them.....The memories are dropping......I'm irritated with myself.....
Even I can read and understand the meanings if I can't come up quickly and clearly, the memories are meaningless and useless.

Uh..... I should go back to square one and start from scratch......need to do so...