Internal Consistency between 1 Nephi 1:17 and 1 Nephi 10:1

In verse 17, Nephi promises to give us two things: First, an abridgment of his father's record. Second, an account of his proceedings:

17 But I shall make an account of my proceedings in my days. Behold, I make an abridgment of the record of my father, upon plates which I have made with mine own hands; wherefore, after I have abridged the record of my father then will I make an account of mine own life.

See 1 Nephi 10:1:

1 And now I, Nephi, proceed to give an account upon these plates of my proceedings, and my reign and ministry;