With St. Patrick's Day coming up, it is neat to read from his own words in his Confession (link to the full document is here: http://www.ccel.org/ccel/patrick/confession.pdf )
"Even if I wished to leave [Ireland] and go to Britain---and how I would have loved to go to my country and my parents, and also to Gaul in order to visit the brethren and to see the face of the saints of my Lord! God knows it! that I much desired it; but I am bound by the Spirit, who gives evidence against me if I do this, telling me that I shall be guilty; and I am afraid of losing the labour which I have begun---nay, not I, but Christ the Lord who bade me come here and stay with them for the rest of my life, if the Lord will, and will guard me from every evil way that I may not sin before Him.
This, I presume, I ought to do, but I do not trust myself as long as I am in this body of death, for strong is he who daily strives to turn me away from the faith and the purity of true religion to which I have devoted myself to the end of my life to Christ my Lord. But the hostile flesh is ever dragging us unto death, that I is, towards the forbidden satisfaction of one's desires; and I know that in part I did not lead a perfect life as did the other faithful; but I acknowledge it to my Lord, and do not blush before Him, because I lie not: from the time I came to know Him in my youth, the love of God and the fear of Him have grown in me, and up to now, thanks to the grace of God, I have kept the faith.
Hence I ought unceasingly to give thanks to God who often pardoned my folly and my carelessness, and on more than one occasion spared His great wrath on me, who was chosen to be His helper and who was slow to do as was shown me and as the Spirit suggested. And the Lord had mercy on me thousands and thousands of times because He saw that I was ready, but that I did not know what to do in the circumstances. For many tried to prevent this my mission; they would even talk to each other behind my back and say: `Why does this fellow throw himself into danger among enemies who have no knowledge of God?' It was not malice, but it did not appeal to them because---and to this I own myself---of my rusticity. And I did not realize at once the grace that was then in me; now I understand that I should have done so before.
Now I have given a simple account to my brethren and fellow servants who have believed me because of what I said and still say in order to strengthen and confirm your faith. Would that you, too, would strive for greater things and do better! This will be my glory, for a wise son is the glory of his father."
I find these words both incredibly encouraging and challenging. Wherever God has brought us, and whatever we have been called to leave behind, let us keep on striving!