When people ask you personally or via email something that you are struggling to decline, use templates. Templates are standard response you use to everyone. With the use of these, you refuse them politely without offending them. Also,  it saves you time and there's less emotional pressure compared to writing a decline every time.

A list of tasks you simply don't do: You delete them, delegate them, outsource them or simply say no when they try to find their way on your to-do list:

• Things you want to say no
• Distractions from being productive
• Regular tasks you can delete, de...