This is why I believe that to stop reflecting and questioning at any age is akin to atrophying the mind.
I personally had to work very hard to overcome ideas I had ingested and, although I had a rational mind, I couldn’t get past certain hurdles as to how I thought the world was supposed to work. It is why I am so concerned about false dogmas today and people’s abilities to delude themselves into rigid thinking which is either hurtful to others or to themselves.
When something is lodged so forcefully in ones psyche it often very difficult to remove; just think about the hard work deprogrammers must endure as they attempt to separate the disciple of a cult from their belief system.
The importance of critical thinking is pivotal and over time I have taught myself to examine things from different angles in order to ascertain their veracity. If they cannot stand up to scrutiny from these different approaches then there may be reason to question whether any portion was ever true.