It behooves us to combat the flesh, and make use of it, without pampering it by unlawful gratifications. As to the soul, we must develop her power by faith and knowledge - Saint Matthias the Apostle

Saint Matthias, you heard Jesus calling you to follow Him from the very beginning of His public ministry. You responded with generosity, fulfilling the humble role of a disciple and missionary. When you were chosen as one of the Twelve and ordained a bishop, you fulfilled your shepherding duty of spreading the Gospel to the ends of the earth. Please pray for me, that I will listen to the voice of God and respond to His call generously all the days of my life. (My Catholic Life)