Set practical goals. Don't set up a goal to work out 60 min's a day if you barely work out now. For example, set a goal for 15 min's and if you work out more, then work out more, but the bare minimum is 15 min's.
I already knew this but it sunk in after being on SP.
If you've lost any amt of weight, I recommend picking up the amount of weight you lost... A loss of 5 lbs may not show up in the mirror, but 5 lbs of oranges or potatoes shows you how much you've accomplished.
Do something every day to continue your weight loss, whether it's working out or planning/cooking healthy.
Keep a bar of super-dark chocolate (70+% cacao) and eat that when you get a craving for chocolate. If you want something sweet, have some fruit that you like.
Instead of ice cream, freeze grapes, bananas, strawberries, blueberries, cantaloupe pieces, mango pieces, etc and eat those instead of ice cream.
Keep a list of projects (break them up into manageable bits) and work on those when you're bored.
Put more a little more effort than you think is necessary.
Otherwise it's easy to skip a workout or eat an extra something too many times.
You'll have saved yourself from the junk calories, you won't have junk food in the house, and you won't want to go shopping to get some junk food later (unless you really want to go out just to get junk food.)
Otherwise you haven't changed your lifestyle, you're on a diet.