By scheduling the stuff that matters to you, you’ll be spending those hours far more wisely than before. It makes you proactive and productive. When you define a task to the future, you can expect it come and you are mentally prepared for it. When something you enjoy doing (like watching movie with a friend or a family weekend in the park) is blocked on your calendar, knowing that it is coming you will not let it slide. Prior to that, you will make sure that other tasks has already been done before you go out to the planned family weekend.
You can use Google Calendar or other apps available on the web to do your time blocking.