In the process of painting you focus your attention on a subject that is at your fingertips. If you do it with enough concentration, it will ignore the extraneous noise, unpleasant thoughts and worries. This is a very useful skill that will be useful in situations where you need to briefly forget about your physical or emotional pain.
There are different varieties of coloring books nowadays, so that all you have to do is decide whether you need it or not; today you can even download the application for coloring. Currently there are more colorings to choose from than ever before, just select the coloring with your favorite motives, print it out or download the program from coloring website.