Have you tried getting into the habit of drinking a glass of water immediately on waking up? Staying well hydrated helps my energy for sure and it also reduces how hungry I feel. For me it works better than coffee and helps me move stuff through my system. Though I've always been a fan of drinking lots of water, I once got a bladder and kidney infection at the same time and since then I have been even more on top of staying hydrated to move toxins out of my body. As a bonus, I have noticed that my sweat doesn't smell as strongly as it did when I was drinking lots of stuff that wasn't water. Also, I don't get as hungover when I'm making sure I'm hydrated throughout the day leading up to going out. I met one lady who was trying to increase her water intake, who had a water bottle with lines drawn on it to show her how much she should have had by a certain time, which seemed to work really well for her, so maybe that's one way you could try too.
I have found that if I carry a water bottle, I drink water. I think keeping it around as opposed to making it an option ("Oh, do I want a soda or a water?") is going to be a good method for me. As for drinking a glass of water immediately upon waking up - I have heard that that helps some people feel more alert in the morning! I haven't tried it, though. As for the bladder and kidney infection...ouch.
Drink more water or I will find a way for you to inexplicably die of dehydration at some point in Hubskina. Seriously though I found out that I was only half of a person until I started drinking water regularly. I found this out the hard way after drinking water regularly for a long while and then one day not having any water. I had completely shut down. It was actually scary how much less productive I was without water.
Yep, no fun. Had to take some kind of medicine that had me pissing blue for a while. I don't know how true it is that the next big wars will be fought over drinking water, but if apocalyptic scenarios motivate you (they rarely motivate anyone, of course) that might be something to think about too. Changing habits is tough and setting lots of small achievable goals tends to be more manageable for people (me included) so I hope you're able to stick with it.