Let's face it...fonts and lettering are hard to draw perfectly, and chalk is not the most exacting of mediums...So leave that work to someone else. You can find tons printable drawings and quotes online, the one I used for this tutorial is from Etsy shop Lady Lee and Drew Jones. You can also make your own printable quotes-just open up MS Word or Photoshop and type it out, you can find cool free fonts at dafont.com.
Once you find what you are looking for, print it out in the appropriate size. The one I downloaded was too small (and I also don't have a working printer at home right now) so I blew it up in Photoshop and sketched it out.
Once the back is covered in chalk, tape your image onto the wall and make sure it is level. Use painters tape if you have it to protect your walls.
I have always liked this quote, and while it is fitting for most occasions, I think it is especially so during this time of year. With all the go go go of the holiday season, remember that you can say NO to the crazy in your life...sometimes it is better to skip that next holiday party and relax with a glass of wine at home :)