This time of year, weight loss ideas are especially abundant. It might be easy to get started with one and leap to the next one as soon as it flits across the TV.
Execution is what makes all the difference. If you don't feel you can execute your new regime LONG-TERM, it probably isn't the right regime for you. Scale it back, modify it to suit your needs, or dump it all together.
No matter how good the program looks on paper -- if you can't (or don't want to) execute it, it won't work for you.
And if you know you can execute but haven't started the ACTUAL DOING yet, what are you waiting for??