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15minutes is a simple productivity tool I wrote.
Procrastination is avoiding work. To avoid procrastination you just have to start working.
One reason we avoid work is because the tasks seem big and overwhelming. Time boxing is a mental trick - instead of thinking about doing the whole task, we focus about working on a task for a fixed, short period of time.
To implement time boxing you need a timer which will alert you about the end of time boxing period.
Any timer will do - a physical timer, iPhone’s built-in clock etc.
I wrote a small application to do it, since most of my work is done on a computer. 15minutes is that application.