How do you know when you’re learning the right thing? 

The most important thing is to be critical. Look at it from different angles. Weigh the evidence. Don’t be too quick to draw a conclusion.

In other words, be as objective as you can, keeping an open mind for truth.

If you’re not sure about something, admit it to yourself—don’t try to prove yourself right. We often think we know more than we really do, but part of wisdom is knowing when you don’t know.