How Do You Track, Measure and Review Your Okars?

Okar, as many oyou already might have known, stands for objectives and qea results. The top or the, how do i say the topmost piece of the whole puzzle, basically is your objective. That key result basically is long the path of getting from point a to point b. How do i know that i am getting there? And lastly, even though it's the last is probably the most important piece of the whole Puzzle, is how do you track, measure and review your okears?...