I think the biggest trick I'd recommend would be to simply take the time to invest in yourself and your style. We all have those sweatpants days, but if you're feeling great about the way you look and feel, it will show and grow from there. Investment doesn't necessarily mean financial -- although selecting a few quality pieces for your wardrobe will surely help over poorly made items that won't last. Take the time to know what looks best on you, the time to try things on and to get the clothes that fit *your* body. Dress to enhance your best features and minimize those you're still working on and take the time to have items tailored to fit when possible. Clothes that fit you properly (including those undergarments, ladies!) not only look better but make you feel better as well.