6 years of inactivity will crush nearly every metabolism. Start dieting and exercising and the fat will fall off. Unfortunately you cannot dictate where the fat falls from first, but places like shoulders and necks are usually the last place the body stores fat, and the first places fat is removed from by the body. (Have you ever seen anyone with fat shoulders? I didn't think so...)

So just exercise and it will come off. Spot reduction is a myth, so try not to focus on it too much.