Yeah, how wide is it? Are you getting the stitch gauge (number of stitches in the 4 inches) right? If you are and the row gauge is that far off it is hard to correct that problem but like Sue said many times row gauge is not important, but stitch gauge sure is. Make sure your stitch gauge is right first. If it is and row gauge is not important just knit to length. If row gauge is important you might try using needles of different materials, like if you used bamboo, try aluminum (in the same size) and see if that helps, sometimes it does a bit, but you are off quite a ways and may need to adjust the pattern if your stitch gauge is right and row gauge off that much. But I suspect that your stitch gauge is also off.
Use whatever needles you need to give you gauge and don't think it is unheard of to use needles of several sizes difference to get the gauge called for. That can happen. Don't try to change your knitting style if it is looks good and is comfortable and natural for you, change your needles instead.