An ignorant mind is precisely not a spotless, empty vessel, but one that’s filled with the clutter of irrelevant or misleading life experiences, theories, facts, intuitions, strategies, algorithms, heuristics, metaphors, and hunches that regrettably have the look and feel of useful and accurate knowledge.
Or as I like to call it, "Magical Thinking"
source: original unknown, but I got it from here [what.thedailywtf.com]
Always remember it applies to all of us...
In addition to the various aspects of critical thinking, self-assessment is a skill we can strive to specifically develop. But a good rule of thumb is to err on the side of humility. If you assume you know relatively less than you think you do, and that there is more knowledge than of what you are aware, you will usually be correct.