Sometimes I forget

I forgot what I was going to say.

Missing words

Many words are missing in the English language.  What does this tell us? Things we value? How we think?

• Antonym for “mistake” - what is a single word meaning the opposite of  “mistake”? If I want to remind myself to learn not only from my mistakes but also from what I did right, how do I say that? If I WANT to make the same (antonym of mistake), what do I say/do?