The excitement of thumb-sucking

It might not be that evident to most of the grown-ups, but for us infants, one of the joys of life is being able to suck our thumbs. Early on, we try hard to put our fist into our mouths, and obviously they don't fit in. This is one of the many "problems on infancy". I have encountered quite a few of these problems myself, and will talk more about them later. But when the moment comes that you are able to put that cute little thumb into your mouth, you know that another hurdle is overcome in the road of infancy.