This recommendation is particularly suitable for larger tasks. Write down all the ways in which further postponing the task will negatively affect your work or private life, finances, health, etc.
Just disconnect. Don't focus on emails, social networks, or browsing the internet. You can, for example, install applications to block Internet access on your phone or computer. Another alternative is to simply stay in a room where no devices will distract you. You'll see how much time and peace of mind you'll suddenly get from performing your task.
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Article source Harvard Business Review - flagship magazine of Harvard Business School