Think of a room that has a large piece of furniture (or something) in it; that item dominates the room, and everything else in the room is organized around it. For whatever reason, the big piece of furniture goes; it doesn't matter why, it's just gone. Now, where that piece of furniture was, you have a big space. You could just leave things as they are: now you have that big space, and you could just enjoy it or use it in an ad hoc manner: no planning, just be spontaneous with it. However, the room might not seem quite right, just sitting there with that space in it where none was before. But maybe you could get used to it. Alternatively, you could rearrange the remaining items in the room to use some or all of that space. Depending on what those items are, it might make them easier to use, it might visually give them more “white space”, if that’s an aesthetic thing for them, or it might seem weird because the things actually have too much room around them – again, an aesthetic thing. A third option is to bring something new into the room that uses the now-empty space. Depending on what it is, it might require the existing things in the room to be moved around to accommodate it. Or, maybe it sits just fine in the empty space with no other changes required. It depends on the details. Now, imagine that instead of a room, we’re talking about time: your day, your week, whatever unit of time you have that has a typical pattern of use. And instead of a large piece of furniture (or whatever), we consider the removal of an activity that dominated how you use your time during that day, week, whatever. What do you do?