Favorite tips?

The thing that helps me the most is my refusal to deprive myself of the foods I love. Instead of avoiding them, I just eat normal portions and/or exercise plenty in order to make up the difference.

Also, I've found that for some reason, taking really long walks (4 to 6 miles) outdoors revs up my metabolism like nobody's business. It's my secret weapon for dealing with all those summer parties - if I can get a good walk in (and plenty of water of course), those extra goodies/drinks won't set me back.