Dear Emunah17, I can relate, I grew up in a home constantly watching movies, whether at home on the TV or going to the theatre. Like everything in our struggle, the main thing is not give up. If at this point not watching movies entirely seems impossible, then can you minimize? If, for example, you watch two movies a week, then watch only one. Every small movement we make turning away from improper sights and kedusha is so precious to Hashem.
But it's not to trivialize how bad movies can be, sitting for some two hours looking at attractive women of actresses. Speaking personally, if I'd see a move at night, the next morning I'd find myself thinking of it during Shacharis with my tefillin on, Hashem yishmor.
Still, if completely giving up movies/TV seems impossible, perhaps start by minimizing how much you watch. Slowly but surely you'll see you can do it.
