Most friends judge each other like investments & never realize it. When someone stops being somehow profitable they stop wanting them as a friend.

All people hide the bad parts of their personalities & bad people do it better. Your enemies & friends will sound exactly the same when you're around, but who's really your friend?

It's everything: it's their interests, hobbies, & loves - it benefits people to change their personality for everyone they know.

It's so hard to get intelligent advice that it's usually not worth asking - most musicians know nothing of music, most politicians know nothing of history, & most people know nothing of life. Really most of intelligence is just admitting what you don't know.

Don't think someone won't hurt you because "no one could be that pathetic." Millions of people make their livings stealing from others & lying as a salesman, so how bad is any other lie that makes them money?

Everyone's "friends" are there when it's fun, but will they disapear when you need them? (There's a good chance that everyone you ever meet will somehow betray you.)

And finally, the most obvious advice of all that *no one* in history has ever listened to:

_______________Don't try to change people.
_______________If you argue you're telling them who to pretend to be.
_______________Don't waste five minutes.
_______________If they think you're useful they'll lie to you for 90 years.