Finding beginner's mind

I would like to cultivate a child-like spirit today.  Not to be childish and immature but rather have an open hearted acceptance with the ability to live in the present moment.  I’d like to feel spontaneous and free to explore; open to learning, growing, knowing, and understanding the world around me.  It would be great to let go of worry trusting that what I need will be provided and to have a belief that the supply is endless.   I want to look around and see wonder and awe in a blade of grass or an ant carrying its treasure across the ground, to dance in the rain and splash in mud puddles not worrying about catching a cold or ruining shoes or clothes.  Looking around and seeing magical moments filled with surprise and delight, savoring a piece of candy, or imagining mythical creatures and adventures; yes, this is the spirit I want to experience for just a little while before responsibility, accountability, maturity, realism, and duty set back in.