You have to work with plenty of effort each day to get the most out of your dissertation. However, you should not overdo it. You can always write for about four to seven hours in a day on average. This gives you time to plan out your work and to write it to the standards that you hold. Also, writing for too long in a day makes it tougher for you to complete a project. It makes you feel burned out in that case.
It is not unusual for people to develop writer’s block when trying to complete something as big as this. To fix this problem, you can always think about activities that will help you to relax. Taking time off from writing for a bit can help as you can eventually jog your mind back to thinking of new ideas. Think about what makes you relax without feeling stressed out. Whatever it is, make sure you allocate enough time for it so you can easily complete your work after a while.