communication problem??

I feel I can't communicate well with people...
Sometimes I write not what I think...
End up people misunderstood it...
Aih...How to improve my communication skills?
I seeing people chatting lots of different topic...
And they can talk different kinds of things in a topic...
But I just can't do it...
I end up the topic fast sometimes...sad...
Need to improve my communication skills...so as my language as well!!

Things that we need to learn are to plenty...we can't even learn finish in our whole lifetime...


p/s: sorry for my grammar mistake~