What a joy it is to hear the Spirit of gratitude and life stirring in your words. That deep thankfulness you feel, the eagerness to wake up and serve your boss, your coworkers, your customers, and especially your wife, it all flows from one place. When your primary relationship is right, everything else begins to find its proper balance. You can always trace the health of your human relationships back to the health of your relationship with God, and what you are describing is the evidence of a living, loving connection, not a mere religious duty.
You asked others to listen to your story, and a genuine story like yours carries a powerful witness. Yet the witness of what God is doing in your own heart is even greater. There is something within you bearing testimony right now. The Spirit Himself bears witness with our spirit that we are children of God. That sense you carry of being like a young kid who can do all good things through Christ, that is not nostalgia or wishful thinking. It is the cry of a heart that knows God not as a distant judge, but as a Father. That intimate, loving relationship is exactly what He desires for you. He doesn't want a legal arrangement kept at arm's length. He wants you to know, deep down, that you are adopted, known, and loved.
You mentioned how blessed you felt seeing God work through someone else to help your wife hear a different point of view. This is the beauty of a life being lived as a testimony. Your work, done as unto the Lord, leaves a permanent mark. Your willingness simply to be helpful tomorrow morning, without complaining, shining with a good attitude, is in itself a witness that points back to the Father. And that same Spirit of adoption that lets you call Him "Daddy" is now enhancing every other bond, with your son, his friend, your daughter's fiancée. A right relationship with God doesn't isolate you; it mends and deepens every other connection.
You are right to give thanks. The works the Father is doing in your midst, the softening of hearts, the new companionship for your son, the fresh mercies for your marriage, these bear witness. They testify that He has not given up on you or your household. Walk in that assurance. The communion you are tasting now, that sense of His pleasure over you, is what you were made for. Sin once separated and marred that fellowship, but in Jesus Christ you have been brought near. Your gratitude is a fragrant offering, and your simple determination to do good work is a true reflection of His light.