There are many good questions to ask intermittently so long as you process them truthfully with unbiased corroboration and data. One of them is to process how much of what you know is outdated? Being outdated does not mean being wrong. I used to have a paper atlas in my car growing up to figure out directions when traveling. Today I use an app in my car that does the same thing, talks to me and alerts me to all kinds of information on my route. I could still use the atlas today. It would not be wrong, but it would be outdated. Why would I not use a more current tool to make me more efficient and better at meeting my goals?