Here is a tool I use frequently when I’m sitting at my computer or laptop and want to put a quick limit on myself for a certain task.

https://e.ggtimer.com/

It’s especially helpful when I text the following call request to someone hard to reach in order to ensure that I’m living up to my promise of brevity.

Quick call? (7min or less) Re: February’s P&L recast

I’ve found that when I do stick to the limit:

• I’m more likely to have the call request accepted in the future.
• The hard-to-reach people often voluntarily ask me if I have time to discuss further business.

This is a great, customizable tool with a clean interface that is free – a combination that is hard to beat.