February is already here which means a huge chunk of resolutions have already failed. Is yours still on track? Have you already reached your goal? If not you may have chosen a goal that was too much to handle. If that's the case, there's no shame in taking a step back.
One of the biggest problems with resolutions is that people get too excited about change. They'll set up goals that are way too optimistic and even impossible such as losing 30 pounds in 2 months or running a marathon when they're 50 pounds overweight. You have to start somewhere and making smaller more manageable goals will give you the confidence you need for more meaningful change.
If your resolution was too much to handle, take a step back and reset it. Cut your goal down and make it more realistic. You can give yourself more time or cut down on the actual goal. If you originally wanted to lose 30 pounds in 2 months but soon realized that this was impossible, try losing 5 pounds in 1 month. When you figure out that losing 5 pounds isn't that hard, you'll have the confidence to take bigger steps to eventually losing the entire 30 pounds.
The most important thing to remember is never quit. Even if you have to slow down or accept a smaller change, anything is better than nothing at all. If the choice is between losing weight at a slow pace or going back to your old habits, why would you even think about going back?