My friend had something like this a few years back and the first thing she did was throw out two of her skirts. She realized that no matter how much she WANTED to do something, in her case, if the michshol was in front of her every morning when she was getting dressed, it would all go out the window. She now brings a friend shopping with her to make sure all of her clothes is tzniusdig and makes sure that she doesn’t have that option anymore.
After a while, sometimes intentions aren’t enough. I can’t speak for your personal dilemma (I’m “biz lady”) but I know that when I was trying to lose weight for my cousin’s wedding, I got rid of all of my junk food. I couldn’t deal with having it all in front of me, no matter how strong-willed I decided to be about it.