You might say that if someone is doing or not doing something that is undermining their commitment, then it is a commitment that they are not sincere about or do not genuinely hold. Perhaps they're hypocrites. This is sometimes correct, but it is also perhaps is an oversimplified perspective. It may not be that we're insincere, but that we're complicated. It is not a source of shame, but may be a window into further learning.
People are complex.
This form of discourse represents the discourse of personal responsibility. We take the rare step of identifying the ways we are getting in our own way and resolve to cut that stuff out, but yet it seems to have so little power. This smacks of the New Year's resolution where by March, we've virtually forgotten about it. Being complex people, we hold a variety of other commitments as well. Look at your B column.