The pressure to "use the time you have in a wise manner" may be part of what is driving the OPs angst that they must focus energy on some worthwhile end. Someon

The pressure to "use the time you have in a wise manner" may be part of what is driving the OPs angst that they must focus energy on some worthwhile end. Someone already mentioned Oliver Burke's book 4000 Weeks but it does a fairly good job of describing a different point of view.