The economy is a lot of different things to a lot of different people. For some people, the economy is some kind of a magical force which steals their home, their job and their investment account right out from under them at what seems to be a moment’s notice. For some other people, the economy is like a giant clock, which has all kinds of interlocking gears and tons of mechanisms that interact in a wide variety of different ways to make things happens which normally might not come about. For still other people, the economy is just the exchange of money all over the world, at every hour of the day.
Any time a person in an economy such as ours spends money on something, they are making an investment in our economy as a whole. Overall, the economy is nothing more than money flowing around from one buyer to another buyer. As a seller becomes a buyer, they will also make an investment into the economy at large, which will grow in turn because of their decision. The purchases that you make today are making an investment all over the place.
Consider the level of infrastructure that it takes, not only to create something, but also to initially design it, to run the place where it is made, to transport it and to market it to the end consumer. All of these functions require people who have jobs. And all of those people also make their normal investments into the economy, through any and everything that they buy. So stop feeling as if the economy is something over which you have no control. You control where your money goes, and thus your economy.