I have a question for those who have some experience in doing maths or theoretical physics or other mathematically oriented subjects. Do you ever have times when you just don't feel like doing maths hence also your subject? What do you do to motivate yourself? Is it a sign that your body needs a break to do other things remote to maths? Or in those times do you push on and force yourself to study? I guess things are harder when there is no exterior element to force you. For example, when its not during semester and you are just thinking of doing some work for your own sake. I am in this situation at the moment. What should I do? I think that studying doesn't have to be torteous and the best work is done when you enjoy your work. For example, most sporting records are broken by atheletes who actaully felt good while breaking the record. It is the case that they are in the zone and pain is absent even though they pushed to the absolute limit. However studying is a bit different. Humans are naturally lazy and is it best to just push on and hope the interest come back again? Certainly for kids under 18, it might be best for parents to push them even if they don't feel like studying. But what about for adults 21+? I guess these periods of not feeling like studying, especially doing maths increase with age even for the keenest academics? That is why Hardy said pure mathematics was a young man's game for people below 40 years of age.