Curiosity is the one luxury nobody can charge you for.

Nearly everything that opens the world up has a price on it, and plenty of doors stay shut for reasons that have nothing to do with how much you want in. Wanting to know does not work that way. Noticing, asking and wondering about the thing in front of you cost nothing, and nobody can withhold them, which makes curiosity one of the few advantages that cannot be bought away from you.

Use the free versions on purpose. Library cards, public lectures, long articles, the person at work who knows how everything runs. Spend a week treating your attention as the budget, because it is.