I think you should start thinking about that whole philosophy in a new light. Instead of seeing no tomorrow and enjoying today to it's fullest, why not think of it as an investment? Spend your time in the way that will enrich tomorrow the most.
That's how I go about, or try to go about it. A good friend of mine, a retired poker player, is a system thinking freak. I think a lot of readers on Sett would agree to his philosophy and love some of his small but enriching life-hacks. He sorts the plates and cutlery when he throws it in the dishwasher, so emptying the machine is ridded of one time consuming task – sorting the cutlery. That system reflects how he tries to furnish everything in his life - In nice and automated systems, where the same effort equals more tasks done in the same amount of time. This way, he has accumulated vast amounts of time, for doing what he loves doing. Usually this involves eating great food and taking post-lunch naps or taking long walks in his scenic natural surroundings on Bornholm.
When you live your life like that, you're constantly building more value and liberating more time – time for you to do what you love (or want to do before you die, check my personal bucketlist here).
Working out and taking care of your body, makes perfect sense in this light. Why not make your body the perfect vehicle to transport you through this adventure? You might die tomorrow, but chances say you won't. Plan for the most likely scenarios, but be prepared for the worst too. Furnish your life in way, so everything you do to stay fit and healthy is aumtomated.
I find establishing anchors, a very powerful way to make this easier. If you have trouble getting up in the morning (something that will definitely steal your time and energy, and is likely to make tomorrow less awesome, because you're postponing tasks instead of solving them), try this exercise.
Go to your bedroom, make it as dark as possible, turn of all electronics except whatever you use as an alarm clock. Strip down to sleeping gear and set the alarm to 2 minutes from now. Go to bed, excactly as you normally would, pretend to go to sleep, close your eyes, breeth slowly etc.
When your alarm clock rings, you fly out of bed, turn on the lights instantly, put on your clothes, open the shudders of your windows, or whatever will make it feel like being wide awake.
Do this five or ten times and you will have started programming your brain anew (if this interests you, read up on NLP, but watch out, there's a lot of BS out there). The next time your hear your wake-up alarm, there's no doubt, that the physical response is jumping out of bed and getting up, flow with that response and do it everytime, without thinking. The more times you practice this anchor, the stronger it becomes ie the harder it get's to mess with it.
You can use the same pattern to build work habits, work-out habits, cooking or eating habits, flirting habits or whatever you need. However, when you betray your anchors, you will have set a precedence for the next time, and the achor will rapidly break down. It is easy to rebuild though. So when you feel it weakening, you just get right back up on the horse and do an anchor-strengthening session.
What was the last awesome habit you started? How did you do it? Share in the comments!