I already told you elsewhere that sometimes the devil gives us great desires so that we will avoid setting ourselves to the task at hand, serving our Lord in possible things, and instead be content with having desired the impossible. Apart from the fact that by prayer you will be helping greatly, you need not be desiring to benefit the whole world but must concentrate on those who are in your company, and thus your deed will be greater since you are more obliged toward them.
– St. Teresa of Avila