1 Chronicles 17:1-4
And it came about, when David dwelt in his house, that David said to Nathan the prophet, "Behold, I am dwelling in a house of cedar, but the ark of the covenant of the LORD is under curtains." Then Nathan said to David, "Do all that is in your heart, for God is with you." It came about the same night that the word of God came to Nathan, saying, "Go and tell David My servant, 'Thus says the LORD, "You shall not build a house for Me to dwell in."
How do I separate my "impulse" from God's will? The verse above teaches that the presence of God is not the same as the approval of God.
All my ideas seem good at night when they pop into my head, but carefully judge each idea over time. Many ideas don't look so good in the morning. Wait.
Wait in God's Word. All ideas do not pass the Word of God test. While you wait, test your idea in the Word of God. In the present day, the Word of God is complete. God's finished Word has "all things necessary for life and godliness." That means that Nathan won't appear in your bedroom at night to let you know what God says. Ask God to give you wisdom from His Word to judge the value of your idea. If you are equally open to "NO" from God as well as "YES," God will guide you. If you search the Bible to confirm your own plan, God may not guide you. He will let you have your own way.
All my ideas at night are brilliant until I open the Bible in the morning. Then most of my ideas aren't so bright. They are outshined by the Word of God. This is good. I would rather have one of God's thoughts than a thousand of my own ideas.
For me to live is Christ.