For me, college wasn't a breeze. I had 8 o'clock classes, I worked from 3 to 11 at the Settlement House. On weekends, if Northwestern Bell needed me, I'd troubleshoot for them, and I had a steady girl. God!
Sensorial perception, for example, certainly occurs with greater or less accuracy according to the degree of interest; it is constantly given other directions by the change of external stimuli and by ideas.