Have a little chime that goes off every five minutes. If you're not doing something worthwhile when the chime goes off, then start doing something worthwhile (f

Have a little chime that goes off every five minutes. If you're not doing something worthwhile when the chime goes off, then start doing something worthwhile (for me that's whatever's next on my to-do list.). www.online-stopwatch.com/interval-timer/ works great.