What you’re passively but consistently exposed to will have a far greater impact on your life than intense yet sporadic bursts of information you seek out.
Imagine two topics: celebrity gossip and ornithology.
Imagine someone who really likes celebrity gossip, so they follow a dozen tabloid-style social media accounts, watch shows like TMZ, and have friends who share the same interest. Imagine this person also has to pass a class on ornithology to graduate, so when they have a paper due they research the relevant facts and put them into reports.
Which subject does this person know more about?
If you really want to learn about anything, you have to make that thing part of the natural flow of information that surrounds you. That flow exists no matter what – but you have a great deal of control over its content.
The Opportunity Machine 