4 Wherefore, I write a few more things, contrary to that which I had supposed; for I had supposed not to have written any more; but I write a few more things, that perhaps they may be of worth unto my brethren, the Lamanites, in some future day, according to the will of the Lord.
A great time manager has a clear sense of priorities and goals. Therefore they can take advantage of unexpected events and adapt to unforeseen circumstances.
Moroni thought he was done after writing the book of Ether. His father had already completed the history of the Nephites, and he had added an epilogue (Mormon 8-9) as well as an abridgment of the history of the Jaredites.
Then, he didn’t die. He makes it clear in this chapter that he was in constant danger. If the Lamanites found him, they would ask about his religious beliefs. He would not deny the Christ, which would cost him his life. Since the Book of Mormon was finished (as he supposed), he probably didn’t have a lot of incentive to start a new project or add a lot of items to his “bucket list.” But over time, as his life continued longer than he had expected, he began to think of the book and of additional content that would be beneficial to its future readers. We don’t know how long it took to develop this content, to record it on plates, and to add those plates to the volume he had presumably already buried in the ground. But because his mind was focused on the things that mattered most, he was able to make good use of this unexpected time and give us the book of Moroni.
Today, I will ensure that I am focused on the most important things, not only so that I can make good plans, but also so that I can adapt well to the events which I can’t predict and can make good use of my unplanned time as well.