I'm thinking both of serious matters (politics, religion etc) and perhaps less serious ones (food preferences, music genres, colours, hobbies). I'm interested in how or why people change their minds about things, whether suddenly or over a long period.
Politics (and religion, I suppose) can be very tribal and sometimes depend more on what we've been brought up to believe rather than the empirical evidence - but have you had a 'conversion' to the other side in some way?
I have a trivial example to do with food. I was at primary school so long ago that they frequently made you sit until you''d finished whatever was on your plate. I remember at the time that chocolate semolina (oh yes!) made me heave, and although I was generally greedy and not very fussy, I just couldn't get it down. I sat there looking at it and knew I'd have to just do it, so started to shovel it in. By the 4th spoonful I was totally converted and after that, I couldn't get enough - even asked my mum to make it at home. This is really weird, I think, and counter-intuitive, but I've never forgotten it! (Not recommending this as an approach now, though!).
Any experiences like this, either major or minor?