Dieting is highly dependent on your current weight and muscle mass. The most dependable measurement for whether or not you should be on a caloric deficit, surplus, or maintenance is your bodyfat percentage. However, this is difficult to calculate without specialized equipment, so a visual chart is provided below to get an approximation of your own.
Take a look at the chart below and decide what you want your bodyfat to be. Now click on this link and follow the instructions on what a healthy caloric surplus or deficit is. You should try to keep you "macros" around 40% carbohydrates, 30% protein, and 30% fat.