Eat like a monkey
Make sure that you are eating at least 5 servings of fruits and vegetable everyday. Try to make one of those servings a banana. Bananas contain high amounts of potassium that help manage fluid retention and assist the kidneys to flush out extra fluid.
Lay off the salt
Salt holds 100x its weight in water when consumed (Himalayan salt included). This can lead to major belly and limb bloat. Try to limit your salt intake to 1500mg of sodium a day or less. Start reading food labels to see where you are getting most of your sodium. Keep in mind that frozen and canned foods tend to have higher amounts of sodium.
Get some Zzzz
Making sure that you sleep at least 8 hours a night on a consistent basis will help your body take in and get rid of water optimally. It will also help keep your metabolism up and stable.
Pump your lymphatic system (a.k.a. exercise)
Exercise several times a week to work your lymphatic system and get rid of excess water weight, toxins, and waste in your body. A good suggestion is 3-4 times a week of moderate exercise for about 20 minutes.
Guzzle some water
Make sure that you are drinking lots of water to help your kidneys flush out extra water weight.