Sure, you eat your recommended portion and sizes at the right meal time. But, what about in between meals? If you have that tempting bag of pretzels at your secret stash or a sumptuous rack of muffin at the pantry, chances are you have been cheating after meals. Add all the numbers and your calorie intake sure go up intensely.
Fill your kitchen pantry with good wholesome, healthy foods. Not junk foods such as cookies, pastries, pop tarts, and other tempting unhealthy treats. Maybe substitute junk foods with high fiber trail mixes, unsalted peanuts and nuts, dried fruits, wheat pastas, high fiber/low sugar cereals, and peanut butter.
When purchasing or selling your schoolbooks online, ensure that you compare the prices each site provides. Prices can vary wildly, so it might be best to buy from one site but sell somewhere else.