You don't need to try and be holy, or do important things — what's holy or important in the eyes of the unreal world around you, matters not at all. It's within your palette of expression to be silly, or funny, or playful or childlike. If it were not, these expressions would not be mirrored in the unreal world around you which has been created as the mirror in which you find yourself.
When we dismiss the playful, silly parts of ourselves as frivolous, and focus instead on deep metaphysical insights in the name of spiritual growth only, we manifest unpleasant results. Even though we may have forgotten how to be childlike and innocently play, if it is present within, it is authentic. To deny its expression, is to manifest the scar tissue of distorted illusion in our environment to take its place.