What's an example of when you changed your mind?

I used to believe that the internet was a bad influence on society, but after seeing how it has connected people and allowed for access to information, I changed my mind and now see it as a valuable tool.

I used to think that social media was a waste of time, but after seeing its impact on businesses and marketing strategies, I changed my mind and now see its value.

I used to think that the education system was fine the way it was, but after learning about different approaches and seeing the challenges faced by students and teachers, I changed my mind and now advocate for education reform.