Good luck:)
My advice (as someone of fluctuating weight) is:
Don't get hungry.
Never leave it more than a couple of hours between meals - have an apple at 9, a banana or a cereal bar at 11.15, lunch at 12.30 and so on. If you are hungry you are more likely to eat anything you can get and it's likely to be the bad stuff. Don't deprive yourself but:
Avoid food you can't resist - for me this means buying cake in a cafe not chocolate - cake I will eat one portion, chocolate I will eat far more and then get a craving and eat again.
Build up exercise slowly but persistently - you don't have to run a marathon tomorrow - just do 3 minutes more walking than you did today. (or 1 minute more than you did today - that's 10 minutes more by next Friday
. Get a pedometer and work your way up to the recommended 10000 steps a day. That's nearly 3 miles for me. Then do a bit more.
Do exercise that you like. If you hate aerobics, for example, you won't do it. Walk somewhere nice, ride your bike round the park (when you can), learn to horse ride, waterski, roller blade, jive, swim, play football, play tennis - whatever YOU enjoy, or fancy. Do something FUN
.
J