I usually search video on youtube about native people talking about everything. I also try to watch some tv shows and movies in English without any subtitle. There is a playlist on youtube that is helping me a lot, it has a lot of listening exarcises: https://www.youtube.com/watch?v=BmcnczeomN8

A good way is to listen to political speeches (not for the politics, but because the speech has an accurate transcription.) That way, you can listen, write down what you think and then compare.