Today's saint is St. Peter of Alcantara. According to the short bio on the front page of MyCatholic.com, he was a mystic whose writings were used by St. Francis de Sales and he was a friend and confessor of St. Teresa of Avila.
MyCatholic.com includes the following quote from St. Peter:
"He does much in the sight of God who does his best, be it ever so little."
~~ St. Peter of Alcantara
What I do so often seems little ... may I, with God's grace, do my best with each day.