After making the best decision according to God's provision of wisdom, guidance, and direction, you need to ensure you walk in it. God's is to lead, ours is to follow. Say the following words of prayer to consecrate your heart to do his will.
Father God, today I receive the grace to excel in whatever decision you help me make. I might act smart and confident in the presence of others but I can only depend on you. Don't let me be ashamed because not everyone around me trusts you the way I do. Let those that are waiting for my failure wait forever. I ask in your name Lord that I do not make foolish mistakes that would tamper with your provision of wisdom. I pray for the grace to always be obedient to your directions and instructions for my life. Amen.