The more water you drink the better you will feel. Don't limit yourself to 8 glasses a day, that's just the minimum required.
Here are some tips to help you get more water in:
Drink a glass before every meal & snack
Carry a water bottle with you at all times
Flavor your water with lemon or lime juice
Add some cucumber and mint to your water
Go walking for 30 minutes and make a goal to drink 1L along the way
Flavor your water with splenda sweetened flavorings