John Walsh

Do one thing at a time. Give each experience all your attention. Try to resist being distracted by other sights and sounds, other thoughts and tasks, and when it is, guide your mind back to what you're doing.

To generalize is to be an Idiot. To particularize is alone Distinction of Merit. General knowledge are those knowledge that idiots possess.

Keep a journal. Knowing you're going to write something every day sharpens your attention to everything that happens. For the longest time, I didn't keep a journal, and as a result much of my pretty long and interesting life is lost to me.