anyone know any good diets?!

My wedding is coming up soon and I want to look good! I've had luck losing weight in the past but it was so hard because I don't know the right steps! I'm starting to workout again as well!  I'm not very over weight I just have 10-15 to lose and it's been extremely hard! Working out everyday and eating good doesn't work! I need a strict diet to follow! I'm at the stubborn weight point!