"We think we want to do something and when it comes to it, we don't. We don't like to commit"

In this quote, Linda McCartney is highlighting the human propensity to have grand concepts and goals, but when it boils down to in fact taking action, we typically think twice or back out. She suggests that this is due to the fact that we are afraid of dedicating to something and possibly failing or facing consequences. This worry of dedication can hold us back from pursuing our dreams and can lead to a sense of dissatisfaction or remorse. McCartney's words act as a suggestion to be conscious of our actions and to not let the worry of commitment avoid us from taking possibilities and accomplishing our goals.