Set a "goal" and then figure out a "daily-habit" that brings you closer to that goal. Then mostly just forget about that goal and execute on that daily-habit. Every now and then, either (1) change the goal - based on your feelings about the daily-habit you are executing, or (2) change the daily-habit - based on whether it is bringing you closer to the goal or not. Repeat.
I have been on both ends at different times - obsessing over either the journey or the reward - and like most things - the answer is not neat, it is murky, and in the middle. We like neat boxes so we obsess and ruminate - goals or constraints, identity or actions, work forwards or backwards, promotions or purpose, etc. - I feel all these ruminations are forms of procrastination and pseudo-productivity.
While it is good to adjust and calibrate your goals & wants every now and then, I believe that taking action is more important than passive thinking. Also, figuring out what you TRULY want becomes a lot easier after taking a bit of action anyway, instead of being in your own head.