(BPT) - It's probably the most commonly made new year's resolution: lose weight and get into shape. In early January, the gyms are full, the sports stores run out of equipment, and the streets are teeming with new joggers. Many of us promise ourselves to lose weight to start the new year, and usually, within a month or two, we have given up.

But it doesn't have to be that way. Dr. Michael Zemel, creator of the NuShape Brand all-natural weight-loss supplement, says that simple lifestyle changes are the key to losing weight and keeping it off.

"People put too much pressure on themselves to change everything in their diets, which sets them up for failure," says Zemel. His advice? Set your sights on making several small dietary and lifestyle changes, and you'll lose weight without making major sacrifices.