In the olden days, we had the threat of getting drafted, or having to work in a factory or in construction or as a waitress or a taxi driver if we didn't succeed in school. Now you can't even get THOSE jobs, so truly, what is your motivation? If you ARE hopefull nevertheless, maybe you just need to get physically energized and THAT would help your concentration. Go run around the block every half an hour while you're studying. It'll be crazy but it will give you and the dogs in your neighborhood something to look forward to. Get a box of mini dog biscuits.