Everything you interact with, whether it’s a person, a concept, a location, anything – changes you. And, if things are working correctly, you change that thing as well. You change a group by joining it, and it changes you. You change a workplace by working there – and it changes you.
This is how people grow and evolve, and it’s a good thing.
But.
Be careful when the changes are flowing too unevenly. In some cases, you should expect (and want!) to be changed more than the reverse. If you’re reading a book, you’re probably changing it very little but you might want to be changed quite a bit by what you learn. If you’re teaching a young person how to do something, you might expect to be influencing more change in them than the reverse.
But be cognizant of that. Know that the things you absorb change you, they don’t just get stored. And the things you teach change the other entity. Don’t do any of it without consideration.