Two things from my perspective.
1. Weight loss is broadly a simple calculation. Calories in minus calories burned needs to be a negative number, ideally 1000-3000 per week for someone wishing to lose 'a bit'
2. Refined carbs (pasta, rice, bread, potatoes, noodles, sugar etc) are bad for you so limit them.
Read 'The Paleo Diet for Athletes' by Cordain - it's amazing. Having lost 5 stone through running over 8-10 years, I lost another stone on this in 3 months after about 3 years of plateauing. Never felt hungry or tire, and it completely blows the theory of carb oading out of the window.