Note: It’s March 25 which is the day that the Ring of Power was cast into Mount Doom in JRR Tolkien’s The Lord of the Rings. About 10 years ago, a group of Tolkien fans decided to commemorate the day by making every March 25 Read Tolkien Day. So you should go do that.
If you’ve not read The Hobbit or The Lord of the Rings, I can think of no better day to start (and no better time to be reading them than the days of spring and Ascension which is only a week and a half away). If you’ve read those, go pick up The Silmarillion. It’s a denser book, but the stories are marvelous and they’ll bring you a bit deeper into the imagination of Tolkien, who had a quite remarkable intellect and was a deeply formed Christian.
There’s a scene near the end of The Lord of the Rings when Frodo and Sam are on the slopes of Mt Doom making their ascent to the crack in the mountain into which they hope to cast the Ring of Power, thereby bringing an end to Sauron’s power in Middle Earth. But at this point it seems as if they may not make it. They’ve marched for weeks on weeks with little food or water. They’ve been attacked by giant spiders, taken captive by orcs multiple times, and now appear to have lost their final reserves of energy as they attempt to make the final push up the mountain. But something is able to keep them going–memory.