Painting and sketching are the ways to express yourself. For some people it is their obsession, for others it is a way to relax their minds. While others consider it a way to make a connection with their inner-self. In any case sketching and painting are something intricate yet soothing and fascinating.
I believe that to display your art you do not have to be a great artist. You just have to draw you emotion and personality on paper.
I find painting stressful. You need to find a right color and also need to learn how to blend colors. When it comes to sketching i find it comfortable even tho i don't have a talent on those. You don't need a talent it sketching just to relax your mind you just need to express your emotion with a paper and a pencil.