more and more, the brain science is showing that the mind is like Einstein's space/time grid - neural pathways are grooved, first by life/parents, then by life/us/habit. the deeper the groove, the harder to see outside of it. every organism will do what is easiest if given an equal choice, so the brain will service the present groove before it will examine options. and the more & more of the tensile strength of the mind's grid which is used to perpetuate these ponderous grooves, the less & less service newness & variety receives. i would venture to guess that memory is affected by that as much as personality
but everything we learn about the brain shows how miraculously fluid & adaptive it is. now that God isn't running our brains anymore - even the most fervent believer feels 100s of times more autonomy than a century ago - we can groove our paths as lightly or deeply, seldom or often as we please. we only have to keep our focus from being as selfish as "God"'s to keep our personalities as open source as we want (tho learning to escape/overwrite old grooves requires more work than most folk want to do). that is what the challenge of these next times will be. currently, we are failing miserably but.....