Draw pictures of unhealthy food.

Studies have shown that eating high-calorie comfort foods can make your happier. The downside is this will also make you fat.

As an alternative, a study published in the Journal of Behavioral and Brain Science in May 2013 found that simply drawing pictures of foods high in fat, like cupcakes or pizza, and foods that taste sweet, like strawberries, can also boost your mood. The positive reactions were independent of subjects' weight and hunger level.

"These results extend a growing body of biobehavioral research on the positive impact of food images on mood by showing that this impact can be applied to enhance mood when expressing food images through art," the researchers concluded.