How do you manage your time, or maybe you don’t manage it at all, letting other people and circumstances dictate to you what to do?
If managing your time seems a big task, why not try to manage just a few hours of your day, maybe even just one hour for a start? If you are not be able to manage your time at your job, do so at least in you free time, where you have more control.
Managing your time means giving priorities to certain tasks, and leaving for later other, less important tasks. It is certainly more pleasurable, and requires less effort to read your mail than working. It is more pleasure to watch a movie than study, but this does not make the task done.