If you believe, you can achieve.
Evidently, if you believe hard enough and long enough, you can even fly – that’s what I heard on the radio. Metaphorically, this is encouraging. Practically, it’s still annoyingly impossible, no matter how strongly I imagine myself butterflying above the ground. The kind of advice that tells us we can be anything we want to be is meant to be inspiring, to encourage us to try difficult things, and help us push through to reach our goals even when it’s hard. The slogans sound so great and fit so well in songs and movies and books and memes and posters that it’s easy to overlook that one pesky little drawback of how none of them are true.