Everything changes for me, based on the lens (of knowledge? of truth? what?) I use to view it.
I cannot eliminate the lens. I can and do keep changing it though, and not consciously either. What I believed in a couple of decades ago, or a couple of months ago or a couple of days ago is not what I believe in right now. It keeps changing based on books, the internet, friends, family and my own experiences. While I don't reflect on experiences often enough(at least in a manner of inspecting my beliefs), it has happened a few times.
Sometimes I worry that I will never know 'The Truth' (if such a thing exists) but will instead sway one way or another depending on the lens I hold in my hand. Mostly though, I lack even that awareness, the awareness that there is a lens between me(the observer) and the truth. I just believe completely in whatever I believe in. I think we're all caught in that trap and our personalities (and perhaps self-confidence) dictate how tenaciously we hold on to a belief.
Low self confidence could either make you extremely permeable to new beliefs, since everything must seem superior to what you belive in at any moment. Or else it can make you fanatical, browbeating everything else, because you are superior in comparison.
I suppose a confident person will have some level of balance, at which point the self-confidence is a non-issue.
Just some random musings while I wait for my dwg file to load.