Hello Menna; I advise you to watch movies with English Subtitles... While you are listening to it, you may read unders screen by the way..And try to choose better English converisation movies or TV serials like LOST, SECRET CIRCLE,etc... and dont forget to listen to foreign music and try to look over their lyrics..

I feel the same way about listening to Spanish. It is so hard to understand the whole sentence. I can sometimes understand words, but not usually the whole thought. I think the subtitles help and finding people who are willing to speak slowly to you. I recommend finding a teach on this site that speaks both Arabic and English, but will speak mainly English to you. That way, if there is a need to use Arabic to explain something, she can do so, but you will get practice also with listening.

I think first you should not think about how difficult it is. Try to get enough exposure to English everyday, it means that you get to hear something in English each day. It will become easier only with time, unfortunately there's no shorcut for it. You already read and write in decent level, so keep a daily practice to improve your comprehension skills. Try finding English podcasts with people talking in normal way. If you want to improve your listening skill with songs, not all of them are good for this purpose.