Easiest Way to reduce sugar intake

You can get withdrawal symptoms from caffeine, but not from sugar. You can also get headaches from dehydration if you don't replace your usual drinks. Replace sugary caffeinated drinks with unsweetened/artifically sweetened, and/or reduce caffeine gradually. Water is best, but you can drink anything you like. Drink until you aren't thirsty anymore. The amount you need depends on your size, your activity level, temperature, how much liquid you get through food, your sugar and salt intake. Don't guzzle down, you can have too much water too, and that can also give a headache.

You can go "cold turkey" from added sugar. There's no need to try to avoid added sugar completely, though, because there will always be sugar in food, and it's the same sugar as naturally occurring in food. What you should be aiming for, is probably a more nutritionally dense diet, so get in a variety of whole, natural foods - fruit and vegetables, grains (choose whole grains more often) and starchy vegetables, beans, meat and fish, eggs and dairy, nuts and seeds, butter and oils. It often means switching to more home cooked food and bringing your own lunches. It does not mean giving up social life or cooking separate meals from your family.

How do you know how much sugar you have been ingesting if today will be my first day of logging? Log first, then draw conclusions.

Don't fall for hypes such as jump starts, cleanses, detox, diets, good/bad foods/carbs/fats, low this, low that, supplements - unless doctor's orders, don't cut out anything you like, don't force yourself to eat things you don't like. Do this: Set an appropriate calorie goal. MFP's suggestion is fine. Log your food and hit your calorie goal - this is all it takes, but it's important that you do it correctly. Weigh everything, double check daabase entries, log the amount you eat/drink, don't cheat, forget or give up.