Robin Sharma wrote about a very interesting exercise for clearing the mind called the Heart of the Rose.

To perform the exercise, all you need is a rose and to be in a silent, relaxing place.

Start to stare at the center of the rose, its heart. Focus all your attention on the rose. Notice its texture, its color, notice everything about it. Only think about the rose that is in front of you and let go of all your problems and worries…

If your attention starts to wander… if you start having unrelated thoughts… just observe your thoughts and let them go…

Then return your attention to the rose…

It’s a very simple exercise, but one that I enjoy to practice from time to time.