Thank you for sharing your learning experience.

Sometimes, we can remember when our friends dared to correct and our learning on those issues has deeply taken roots. We can thank our learning buddies for helping us to become better, again.

Yet many people react negatively to 'Time cops' so that they only remember their broken pride but none of the good advice.

I had learned to let go of my ego ('atta') the hard way -- too.

There are more fine points in what you said. You told us:

first 'your world view changed' (but you did not tell us 'when', and a Time cop helped you out) - your view of the world changed;

then 'your wold has changed' (in Present Perfect tense : 'perfect' here means 'complete(d)' or 'finished'; not superb nor meeting the criteria exactly) -- still the world has changed by it own doing;

last 'my world has been changed' (in passive mode) --- someone (including you) or something has changed your world.

A question may be asked: Is it 'you that has changed the way you see the world' or is it 'the world, that has (been) changed, and you now see the changed world though you have not changed?

I think we have come to appreciate PSE a bit more. ;-)