I found that I am doing better just cutting out little things at a time. To do it all at once was overwhelming. A little adjustment here (add excercise) another adjustment there (drink more water, eat more salads/vegatables) has been working for me. I will keep nudging my lifestyle until it is something I can live with and be healthy. As circumstances change I believe I will always have to make these adjustment.
I was also told not to diet on a daily basis, but to plan a higher calorie meal once in a while as it keeps us happy. I had a candy bar a couple weeks ago, but it was planned for, adjustments were made in my calories. But the important thing is I had no guilt, plus as it was planned for it didn't start me on a binge.
This may not work for you all, but it has helped me.