Try focussing on smaller chunks of 25 minutes session and take a break. There is a good Coursera course on "learning how to learn", which talks about how our br

Try focussing on smaller chunks of 25 minutes session and take a break. There is a good Coursera course on "learning how to learn", which talks about how our brain learns and retains information. They also talk about different technique, which directly addresses mental laziness.