How do you change your mind's eye?

Many years ago I lost great gobs of weight and never saw it. And because I didn't see it I was free to gain weight again - I didn't see the increase either. So I got fatter & fatter. I wish I had taken steps to make me see myself as the attractive, slim woman I was. A new hairstyle or color, a totally different way of dressing, something to wake my brain up. DO SOMETHING. Follow the psychological advice - it sounds like a reasonable approach but also change something physical besides your shape so when you look in the mirror you have a "wow that's me" moment.