Personal record book (5)
I believe the answer is:
diary
This clue is a double definition.
'personal record' is the first definition.
(I've seen this in another clue)
'book' is the second definition.
(I know that diary is a type of Journal)
(Other definitions for diary that I've seen before include "Pepys' daily record" , "Personal journal" , "personal account" , "Appointment book" , "Daily record of personal activity" .)