Making the smallest changes can sometimes have the effect of snapping us out of autopilot and really appreciating the present moment. This is the fourth in a series of posts about mindfulness exercises that you can incorporate into your day.
A few times a day, especially when you feel like you need to change your state of mind, do a silly walk. For example: walking backwards, skipping or hopping on one foot. Observe your mood and how it changes after you do this.
In my experience, even if I'm in the middle of a very serious task, just going ahead and skipping for a few seconds or so will bring a slight smile to my face, and lighten the mood. It's almost involuntary. Walking like this changes our perspective momentarily, and allows us to take things a bit more lightly.
Source: How to Train a Wild Elephant & other adventures in mindfulness