Hi there, it's me.
After talking about some topic, I feel like either of these two; "I've talked too much, I didn't mean to say that" or "I haven't said what I wanted to say or should have said."
The more important the topic is, the bigger this feeling gets.
There's no way that I think like "Well, I have nothing left unsaid." and feel satisfied.
That might be because of lack of speaking skill, vocabulary, organizing ability, or speculation itself.
I know that, no matter how hard I try, this kind of feeling (of regret) will never stops coming to me.
I won't be able to be free from it.
All I can do is to try to be more intelligent than today and reduce this pent-up feeling by reading, listening, thinking, writing and talking.
Oh, Sucks! My English has already become horrible.