With our other desires, the idea is to take note of them when they come up, and then put them aside -- let them go. The same goes with the desire to be spiritual. As Gates said the other day, and re-emphasized here, we are not our thoughts. And the same goes for our thoughts about our spiritual shortcomings.
This is a pretty simple point, but one that bears repeating. I've found this pitfall to be especially troublesome while writing this blog. To a certain extent, dwelling on my shortcomings is an essential part of this blog. Worse, some times I find myself searching for shortcomings (not that they are difficult to find) so I can have material. So, I'm thankful for this meditation. It's a nice caution for me. (And yes, oops, this paragraph may be an example of what I'm talking about ;))