Just because you cannot realize your highest aspirations in work does not mean you have chosen wrongly, or are not called to your profession, or that you should spend your life looking for the perfect career that is devoid of frustration.... You should expect to be regularly frustrated in your work even though you may be in exactly the right vocation.
Every Good Endeavor: Connecting Your Work to God's Work (ed. Penguin, 2012) - ISBN: 9781101600337