Before we really dive into what it means to "train wisely," it might be helpful to describe wisdom. In a way, that's what the book of Proverbs is all about, this description of wisdom.
One of the main ways Proverbs describes wisdom is by contrasting it with foolishness. Proverbs 11 exemplifies this technique. The author rattles back and forth between descriptions of the wise (or righteous or upright) and the foolish (or wicked or unfaithful). Readers of Proverbs are pushed, we are pushed to walk in the way of wisdom. Psalm 1 echoes this contrast. Let's not be fools, here.
So, part of our resolve to "train wisely" also involves refusing to "train foolishly."
Here are 10 ways to train foolishly...
1) Depend too much on resources
2) Reject available resources
3) Try to do too much at once
4) Plan to do too little at once
5) Rely too much on other people
6) Fail to rely on other people
7) Ignore your God-given rhythms
8) Obsess over your God-given rhythms
9) Exaggerate the importance of your effort
10)Downplay the importance of your effort
Maintaining a healthy balance in these categories - resources, timing, community, rhythm and perspective - has proven vital to my pursuit of discipline. That narrow way that runs straight through those extremes of foolishness, that is the way of discipling, the way to "train wisely."