Depending on your age and/or love life, this may or may not be possible... but, I lost 25 lbs. planning my wedding. Actually, more than that but from the moment the ring went on my finger to the actual wedding, it was about 25 lbs. In total, I've lost about 35 lbs. over the last 21 months or so.

Another thing I suggest is travelling. What started me off losing the first bit was going to Scotland, Ireland and England. While they were great countries, the food was very different from what I'm used to here at home, so between not eating very much and walking all over tiny medieval towns and castles, that got me started on my weight loss.

Sadly, neither of these options are very cost effective!! LOL