Sometimes we try to take decisions into our own hands, even though Proverbs 3:5 admonishes us not to do that - "Trust in the Lord with all your heart, and lean not on your own understanding." The fact is that He knows "better than I". God tells us that in Isaiah 55:9 - "...my thoughts and my ways are higher than yours..." Well, duh! Why do we have so much trouble understanding that? So when we have decisions to make the very first thing we need to do is pray for guidance. But a couple of problems arise. First, we get impatient, because God has His own perfect timing and wants us to wait, and we usually don't and then we "lean on our own understanding." Secondly, sometimes He gives us the answer but we're not listening and we miss it, and we "lean on our own understanding." So, the solution is: pray, wait, listen.
He knows "better than I".