50 CENT has hailed the journalist behind his new book FROM PIECES TO WEIGHT - because he gave him such a hard time writing it.

The rapper admits he struggled to remember much of his childhood, and much of this information he gave writer KRIS EX was in pieces and out of order.

He tells MTV, "I had to write it in pieces, because you remember things and then you go back and remember something else and it fits in the timeline.

"We did a lot of talking on tapes. They then had to write it in sequence.

"I had a great journalist working with me, Kris Ex."