Relaxing with Coloring Books

I love art. I have always loved art. I have been drawing and coloring since I was three, and for a time I even wanted to be an artist before I decided to go the complete opposite way in life by going into the Information Technology field. But I still love making paintings and drawings. Almost all the artwork in my room are pieces I made myself. And sometimes I don't have time to come up with an idea and create it. Sometimes I just want to color to relax. So this year whenever I'm feeling stressed I'm pulling out one of my coloring books. This one in peculiar as I leave it out on my desk with my color pencils.

Vive Le Color Serenity
Mae Polzine Art Serenity

My best friend gave it to me for Christmas, and I love it to pieces. You may recognize some of the artwork as I started using it as the background to my beauty photos. Here are some of the pages I've completed so far.

Abstract Serenity
Serenity Butterflies
Dark Serenity
Colorful Serenity
Serenity in Flowers

What do you use to relax or do you have a favorite coloring book?