Well, I'm still at it. "It" being my goal to add approximately 20,000 words to a fiction manuscript I've written. Seems life wants to interfere with this goal most of the time. To center myself, I often turn to the Old Testament and some of my favorite verses:
"Unless the LORD builds the house, its builders labor in vain."
"In his heart a man plans his course, but the LORD determines his steps." Proverbs 16:9
The completion and publication of the manuscript is my heart's desire. As long as I allow God to direct my steps and work toward His glory in all that I do, I will enjoy success. Only He knows if this includes the manuscript.
What goal are you struggling to achieve? I'd love to hear about it.