My observation and encouragement for success and excellence today is taken from Joshua 1:8 and Keil and Delitzsch’s commentary.

In Joshua1:8, there is not only attached encouragement to continually study and lay to heart of the commandments of God, but even more closely to read the law every day. “Not to depart out of the mouth,” means it is to be constantly in the mouth. The law is in our mouth, not only when we are sharing (teaching) it, but when we are reading it intelligently for ourselves, or conversing about it with others. To this there was to be added meditation, or reflection upon it both day and night (Psalm 1:2). It does not mean theoretical speculation about the law, such as the Pharisees indulged in, but a practical study of the law, for the purpose of observing it in thought and action, or carrying it out with the heart, the mouth, and the hand. Such a mode of employing it would be sure to be followed by blessings. “Then shalt thou make they way prosperous,” i.e., succeed in all thine undertakings (Deuteronomy 28:29), “and act wisely” (as in Deuteronomy 29:8).