Nutrition can be a useful thing. No really, it can be. In terms of taking better care of yourself through a healthier diet to make yourself healthier is truly a useful thing. To start learning some basics as to how to make this work for you, refer to the tips below.
Whenever you get that growling sensation in your tummy, have a healthy choice on hand. Look at portion sizes for your usual, and then compare that to the healthy alternative. This is a chance for you to fill up for less. Keep snack size portions on hand so you can't use the “it's easier to get the other” excuse.
Whether or not you are vegetarian or a meat eater, protein is a very important part of your diet. You should eat protein at every single meal to keep your blood insulin or blood sugar levels balanced. Eating too many carbohydrates and not enough protein, can give you an energy high, now and an energy crash, later.
One of the most important nutrients that your body needs is water. Drink plenty of water throughout the day. Preferably, use filtered tap water to simultaneously avoid cluttering the environment with bottles but also avoid drinking any chemicals or contaminants that may be found in your local tap water supply.
Never totally deprive yourself of what you love to eat, but instead replace it with something similar but healthy. You must know or learn the nutritional profiles of what you're eating, learn what the alternatives are, and pick alternatives that have a healthier profile. The job of doing this has become easier these days, since many restaurants are offering nutritional information about their menus.
So, now do you see why nutrition is such a useful thing? Discovering your own nutrition and working upon it to eat and be healthier is indeed quite useful. The tips above should have created a good foundation for you to build upon and find a nutrition plan that is right for you.