Self Identity In Jannah
This personality/Shaksiyat refers to divine process of Nafkh-e-Ruh (‘ Nafs ‘) which provides consciousness to the person (moral sense i.e. ability to differentiate right from wrong, aesthetic sense and ability to logically infer and deduce information and principles). Personality disorders that you might be referring to in terms of psychology do not deprive person of these factors and are treatable clinically. But as a principle, if someone was deprived of this ability to establish this link between his nafs and his physical body, then there is no accountability for the person, that person will be sent to Jannah. The problem lies in establishing link between nafs and the physical body, for which brain plays a critical role in establishing that connection. This doesn’t mean that Nafs of the person is defective.