There’s an opportunity cost to every activity (or non-activity). As I’m writing this, I’m not on social media, talking with my friends, or reading a book etc. I’m giving this writing more importance than the other things I could have done with the time I have.
Similar to time, we make decisions with our money as well. We purchase certain things instead of something else. With limited time and money, we have to be very conscious of our decisions. Every moment has an opportunity cost. The choice is in your hands.