Timeboxning is a method for the one who has trouble getting a job done. It could be a task that you postpone again and again. You may have some customers to call, but keep finding other things that are more important and never started the job.
It allows you to share your task into something that can be done about. 30 min. That means small tasks you may pick 3 exercises in half an hour and the major tasks you can split up into 30 minute tasks.
The next step is to give yourself a prize every time you perform the task. The prize can be anything but it must be something you want.
Here are some suggestions for prizes: Listening to music, eat some fruit, go for a walk, watch a movie or read the newspaper or whatever suits you.
Each time you get a job, you're putting too yourself a prize that you give yourself every time you finish the task.
There is no time that you suddenly realize you work longer without thinking about it because you focus on getting the job done and the time feels not relevant.
Good luck with your work.
Do you have any questions please feel free to send an email
With Best Regards