Receiving The Eucharist Often

If worldly people ask you why you receive Communion so often, tell them that it is to learn to love God ... Tell them that for your part you are imperfect, weak and sick and need to communicate frequently with him who is your perfection, strength, and physician ... Tell them that you receive the Blessed Sacrament often so as to learn how to receive it well, for we hardly do an action well which we do not practise often. (Francis de Sales)

Ron Rolheiser has soemthing good to say about this as well, here.