Making resolutions is all about will power.
But will power alone is not enough. Seek out revelations about how the body REALLY stores fat, and obey the findings of those revelations. Then apply the will power, to compel yourself to continue to observe the sanctity of those findings. The practice of yoga is a good way to set the mood.
A kind of self-hypnosis to shift the paradigm.
The key is making your body use fat stores as fuel, just cutting calories isn’t enough.