If you already have a good morning and bedtime routine, make drinking water a part of it. You can still have your morning coffee, but add a glass of water in beforehand. The Natural Choice blog recommends having a glass at the same time and in the same place during your routine every day:
…get in the habit of drinking a glass of water right after you get out of the shower, or right before you wash your face at night. This is an easy way to add at least two glasses of water a day to your routine.
Wake up, have a glass of water. Get ready for bed, have a glass of water.
Just by doing that you get a head start on the rest of the day.
If you’re having a hard time remembering to incorporate it in your routine, find ways to make your water more visible. Put a glass of water on your nightstand so you see it before you go to bed or have a glass waiting by the coffee maker so you remember to have a glass while your joe brews.