How to we get to the tree?
1 Nephi 8:19-20
And I beheld a rod of iron, and it extended along the bank of the river, and led to the tree by which I stood.
And I also beheld a strait and narrow path, which came along by the rod of iron, even to the tree by which I stood; and it also led by the head of the fountain, unto a large and spacious field, as if it had been a world.
1 Nephi 11:25
And it came to pass that I beheld that the rod of iron, which my father had seen, was the word of God, which led to the fountain of living waters, or to the tree of life; which waters are a representation of the love of God; and I also beheld that the tree of life was a representation of the love of God.