Where are you now with your weight goals?
Motivation is all about personal will. Do you want to lose weight? Some people think they want to lose weight because someone around them either says they should or is losing weight also. Figure out why you want to lose weight, write down the reasons. When you feel the need for comfort food or second helpings just read why you want to lose weight, if it's a good enough reason for you than you'll be motivated not to make bad food choices.
A friend of mine posted her goal weight and her actual weight on a social site. She then set weekly public goals and held herself accountable by posting her actual weight every friday. She also posted exactly what she ate each day. She recieved lots of positive reinforcement from people with her progress.
Food Diary. I used one and saw how much I was eating and exercising. ba<x>sed on that, I could adjust what my food intake was. I also kept how much I weighed every day. When I saw it on a monthly basis, I saw how much I lost and I kept being motivated to keep trying to lose weight with each victory.
find a couple of other people who are trying to do the same and then you can help and motivate each other to try a little harder.
Just. Have. Fun. If it's not fun, Don't do it, give yourself a break! you're working too hard!
acousticanne gave me this advice:<br />
Just find something that motivates you and stick at it like a reminder, a picture of someone really fat with jiggles and all hanging around the belly area and waist then tell yourself thats you in future if you dont stick at it now. Make a huge print out of the picture and stick it somewhere you can see, first thing in the morning you do you look at it and lo' and behold, some motivation flowing in quantity - good luck :)<br />
(Those were her words exactly. I copied them from my question because I was asking the same thing)