An important principle:

Attach yourself to the Creator, blessed be He, and in that state of attachment pray for some need of your household, or do or say something though there is no need for that act or speech. Do so in order to train yourself to have your thought attached to the Creator, blessed be He, even when you are involved in actions or speech relating to material matters, to become accustomed to a state of deveikut at that time. 1