You kind of have to arrive at the point where you are ready to lose. It's a bit like a holy grail quest - you need to find the journey yourself! I have tried and failed (followed the eating plan a few days then back to kfc for several months) to lose weight many times. I really wanted to lose for a wedding I was in but for some reason couldn't commit to it and by the time the wedding came I was at my highest ever. It was a few months later I got up one day and devised an eating plan. from that day forward I stuck to it.
You need to decide to do it and have the focus and commitment to see it through. Even if that means no eating out for a month until you have established an eating pattern.
Good luck with your journey!