And when people are bored and can't come up with things to do by themselves, they just end up doing what others tell them to do. And then they complain about how annoying that is because its not what they want to do.
The key is to be "conscious", at all stages of your life, about the things that spark your interests. Most people don't know what their interests are because they have been walking through life, without noting down and then thinking about the different things that spark their interests.
Once you know your interests, you automatically start looking for book/tools/teachers/teammates to help you dig deeper. And then things snowball. That leads to new routes and new interests. But if you stop walking all that never happens.