Cut your carbohydrate intake and replace those calories with high quality whole food sources of protein and fats to melt your fat away.

Over at Mark's Daily Apple is a great little article to help you better understand the mechanisms involved.

Ketones, to put it briefly, are compounds created by the body when it burns fat stores for energy. When you consume a diet very low in carbohydrates, the body responds to the significantly lowered levels of blood sugar by flipping the switch to another power source. The body converts fatty acids in the liver to ketones. Ketones, then, become the main energy source as long as blood sugar levels remain low...

...Ketosis was crucial to our evolution. Given the relatively minor role of carbohydrate-rich foods (even the consumption of many tubers is thought to have come later with the advent of cooking practices), our bodies were fairly frequently operating in the arena of ketosis. Add to this the fasts and famines of primal living, and it’s clear that ketones served as an essential energy source.

Give the low carb. nutrition plan a whirl for a few weeks. Simply cycle your carbs low (100 - 150 g. a day or less) for 2 - 3 days and then add them back in on days 4 and 5; repeat this rotational schedule for a few weeks and let me know how awesome you feel.

Just be sure to replace those calories you would've consumed as carbs. with healthy whole food sources of protein and fat.