Most prayer begins with a human need. [Often in prayer] the need is not put aside; it is presented to God in the hope that God will act, and the body will be healed, the relationship restored, the job acquired or the decision made. The hope is that the need will be resolved to our satisfaction.
… Focusing on the need seems reasonable, but what the mind dwells on tends to fill the mind. Obviously, a need is an expression of lack; it is something we do not have, and if we think about what we do not have, the mind is filled with thoughts of lack.