I would love to have time to study those topics. However when I have spare time and I could devote a whole day to study, I realize my attention span does not ma

I would love to have time to study those topics. However when I have spare time and I could devote a whole day to study, I realize my attention span does not make it. So to anyone reading this, my advice is not to wait for retirement. I am lucky enough that my kids now prepare and go to school alone. So every morning I have about 45min when I can say fuck to the outside world including work and pursue studies I am interested in. I can't study any difficult or new subject after work. Progress is slow but real. Thanks for the advice for note taking. This is something I really have to improve.