I don't think life changes much after marriage , especially if you already had a miserable one. The notion or belief one holds while growing in a miserable family is to make everything good after their own marraige. But growing up into such families for a long time turns you permanently into one. You keep on hoping that one day it'll be fine , one day it'll all be okay , one day you will be happy. But it shows no signs. The misery just succumbs you and eats you up from inside. You don't understand anymore on how will you atleast be smiling through the day if not happy. You give up on ways to find happiness if not create them. Marraige just becomes an escape , a distraction. To run from one miserable place to another hoping it to be better or less than before. But when your heart and mind are necrosed , you shrink into the oblivion and all that's left is darkness.