One financial lesson they should teach in school is that most of the things we buy have to be paid for twice.

There’s the first price, usually paid in dollars, just to gain possession of the desired thing, whatever it is: a book, a budgeting app, a unicycle, a bundle of kale.

But then, in order to make use of the thing, you must also pay a second price. This is the effort and initiative required to gain its benefits, and it can be much higher than the first price.

A new novel, for example, might require twenty dollars for its first price—and ten hours of dedicated reading time for its second. Only once the second price is being paid do you see any return on the first one. Paying only the first price is about the same as throwing money in the garbage.

Likewise, after buying the budgeting app, you have to set it all up, and learn to use it habitually before it actually improves your financial life. With the unicycle, you have to endure the presumably painful beginner phase before you can cruise down the street. The kale must be de-veined, chopped, steamed, and chewed before it gives you any nourishment.