The prayer "Make me an instrument of your peace" goes back to St. Francis of Assisi, even if it does not come directly from Francis' pen. It is full of wisdom and love and can be put on everyone's heart.
Lord, make me an instrument of your peace,
that I may love where people hate;
that I may forgive where there is offence;
that I may unite where there is strife;
that I may speak truth where there is error;
that I bring faith where there is doubt;
that I raise hope where there is despair;
that I may light where darkness reigns;
that I may bring joy where sorrow dwells.
Lord, let me seek
not that I may be comforted, but that I may comfort;
not that I may be understood, but that I may understand;
not that I may be loved, but that I may love.
For he who gives himself receives;
he who forgets himself finds;
he who forgives is forgiven;
and he who dies awakens to eternal life.