In these days, talking with foreigners is still the "big" issue to me. I'm so scare to speak in English when other colleagues present. The situation could be worst if foreigner come and talk to me suddenly. I fear of not understanding what he would say, making me so nervous.
I have just read an article about "Listening Skill" in English. It did remind me about the attitude towards the good listening comprehension. The most important thing is not to understanding everything. The author encourages readers to concentrate on what he / she understands when listening to other's speech, just skip the missed words.
This is a good article to me actually. My problems in listening English are mainly:

• So nervous when listening to foreigner (even before that)
• Fall into an unknown word, and then miss the latter words

I have to accept that I can't take 100% understanding, but try to get all I heard, that's all. Certainly, "Fully understanding" is still the destination goal.