"We are the custodians of life’s meaning." - Carl Sagan :)
We’re designed to survive, but not to be productive.
Your brain is more than capable of choosing a quick and appropriate response to predators and imminent danger, but has no notion of important long-term goals other than through rational thought.
What feels good right now and what’s important in the long run are almost always completely different things.
Personally, what works for me are making to-do lists and creating momentum. I get up and the first thing I do is do a quick workout, then I eat and immediately get to work, reserving relaxation for later in the day.