I'm reading "Meditations for Immortals," and in Chapter 2, there's an example about someone who wants to meditate. Instead of actually meditating, they focus on the process of deciding the right time to meditate. In doing so, they determine that it's not the right time now and that maybe a better time will come later.
This is something we all do frequently. We want to pursue various activities, but we get caught up in the details of starting than taking action. For example, I want to learn how to draw so I reasoned that I should order a bunch of Field Notes journals. Two weeks later and they're still not here. During this time, I could have simply sat down and... well, draw —whether for a long session or just a few minutes a day instead of waiting for the notebooks to come in.
Ultimately, I'm realizing more than ever that it's easy to become fixated on the preparation and miss out on actually doing what we want to do.