Ask yourself too
When reading articles, books, or watching movies and news, ask your opinion. Not doing so is tempting because you're most probably used to consuming information, not questioning it.
There is much information noise out there. It will be more and more of such, especially with cheap language models that produce any text one wants for any audience. Each source of information tries to shape your opinion in one or another way. I'm sure you know that (however, do you realize it?). Nonetheless, have you questioned yourself as to what direction those sources try to shape it after reading an article?
People can't define all the possible directions information shapes an opinion. Did you ask yourself why a text was written? What goal did the author follow? There are no facts, only interpretations, and it's alluring to perceive someone's perspective as a fact. Every author tries to deliver their ideas but the author's unique experience already frames them.
Even after understanding most of those ideas, did the author have other motivations rather than merely delivering information to you?
Do you agree or disagree with the author and why? Disregard this exercise and you consume information automatically without constructing and outlining your opinion. Neglect creating your attitude and you may discover you don't have many of them. Or, you don't have any of them at all — only those perceived and formed automatically but not yours.
Ask yourself too.