Saint Paul wrote of himself, what is true of each of us, when I am weak then am I strong, i.e., when I am filled with a sense of my own weakness, and finding my utter helplessness, put a simple and entire confidence in God, then I am strong in the power of His might. I can do all things, through Christ, which strengthened me. On the other hand, it is not less true, that when we are strong in our own conceits, then we are most weak. When we fancy ourselves able to bear, and do all things of ourselves, and confide, or even, as we are prone to, glory in our own supposed spiritual strength, then is the time of our utter weakness. For God withholds His support from presumption, and we are left deservedly to ourselves. Let us never lose sight, then, of the fact that our own strength is absolute weakness, as to spiritual efficiency and progress; dependence on it tends only to humiliating failures and grievous falls; while conscious weakness, with a lowly spirit of confidence in God, is our true strength; God's own strength is then perfecting in us whatsoever things are holy, lovely, and of good fame. Take this as a lesson for a daily Christian life, that we walk securely only as we walk humbly. Saint Peter had to learn this lesson, and let his denial of his Master teach it to us.
- text taken from Daily Bread - Bring a Few Morning Meditations for the Use of Catholic Christians by Father Richard Waldo Sibthorp