... and lean not on your own understanding.
The father talks about leaning, which is a symbol of dependence; if a person is leaning, he can fall if not steady. In the same way, when we TOTALLY trust our own thinking or reasoning, we, too, can be leaning on something unsteady. Why? Because our understanding can sometimes be wrong. Our thoughts can be off, our perception misguided and misinformed, our instincts and feelings can be based on something that isn't really going on or isn't true.
God gave us a mind to use! The proverb isn't saying not to use it. But do we have the ability to question our own judgement? The world often tells us to trust our inner thoughts and feelings, aka "our truth." Because our truth must always be right! The whole world is wrong before we are. Right? Yet, haven't we all experienced getting worked up over something only to realize later our understanding of what had taken place was not exactly based on facts or what actually happened? Oops -- it happens! Our thoughts and feelings are not an all-knowing God. Although feelings are real, the pain is real, the anxiety is real ... we can and should learn to question our own judgement by asking ourselves if we might be wrong. Hit the pause button instead of going directly from emotion to action or feeling to doing.
Want to live a good life? Lean on God -- not just on your own understanding. Today, consider if there are areas in your life where you're not fully leaning on him. Maybe you're relying on your own understanding. Make the decision to lean on him and his understanding. He is "the way, the truth and the life" (John 14:6). And he's available to you, so lean on him today!