I've just begun a significant cutting program myself, after over a year of "bulking up". My trainer, an ex-competitive bodybuilder, has me upping my water intake to about 1 1/2 to 2 liters, or gallons of water a day. Also cutting sugar from my diet, as much as possible, and keeping my carbs down to a bare minimum. increase your consumption of vegetables like green beans, asparagus, spinach. Any carbs that you do eat, like potatoes or brown rice, which is preferable to white rice, eat before 3 PM in the afternoon, because carbs take longer to be digested by the body and can be stored as fat a lot quicker. Try to reduce your sodium intake to under 70 mg for any particular item that has sodium in it. Any meats you have during the day (chicken, turkey, tuna, red meats) which is your primary source of proteins, cut down to approximately 7 ounces per serving. Eat approximately every 2 1/2 to 3 hours, averaging about 6 to 7 meals a day. Increase your cardio to approximately 5, maybe 6 sessions a week, at approximately 30 minutes a session no more. (try to burn over 500 cal per session)
That, in a nutshell, is the basics. I followed this basic routine, about a year and a half ago, and lost about 20 pounds in three weeks. This time around, I'm trying to lose 25 pounds before my 50th birthday in April. I want to try to get back to my ripped appearance in some of my photos that are in my profile at this time.
Addendum: try to find a certified, qualified, trainer that is knowledgeable in diet and nutrition, as well as working out, and get with that trainer to give you more focus...