A good tip to lose weight is to eat before going out with friends. After a few drinks or peer pressure, you might become tempted to give into your cravings and eat unhealthy foods. By eating beforehand you won't have to worry about wrecking your diet, because you won't be hungry.
A great tip to help you lose weight is to leave the house and just go for a walk whenever you feel the urge to snack. Sometimes it's just about distracting yourself when you're hungry. Leaving the house and going for a walk is a great distraction from hunger.