36 When we consider the immensity of others' needs, we can, on the one hand, be driven towards an ideology that would aim at doing what God's governance of the world apparently cannot: fully resolving every problem. Or we can be tempted to give in to inertia, since it would seem that in any event nothing can be accomplished. At such times, a living relationship with Christ is decisive if we are to keep on the right path, without falling into an arrogant contempt for man, something not only unconstructive but actually destructive, or surrendering to a resignation which would prevent us from being guided by love in the service of others. Prayer, as a means of drawing ever new strength from Christ, is concretely and urgently needed. People who pray are not wasting their time, even though the situation appears desperate and seems to call for action alone. Piety does not undermine the struggle against the poverty of our neighbours, however extreme. In the example of Blessed Teresa of Calcutta we have a clear illustration of the fact that time devoted to God in prayer not only does not detract from effective and loving service to our neighbour but is in fact the inexhaustible source of that service. In her letter for Lent 1996, Blessed Teresa wrote to her lay co-workers: “We need this deep connection with God in our daily life. How can we obtain it? By prayer”.
Source: Deus Caritas Est (Vatican.va)