i have split personality?!

my guardian angel told me i'm two different person in one body 
... is that possible? my dad told me i'm almost considered with schizophrenia... and one stranger today told me i might go mad one day...

this is the precise dictionary explanation for that huge jumbo word:
1) Any of a group of psychotic disorders usually characterized by withdrawal from reality, illogical patterns of thinking, delusions, and hallucinations, and accompanied in varying degrees by other emotional, behavioral, or intellectual disturbances. Schizophrenia is associated with dopamine imbalances in the brain and defects of the frontal lobe and is caused by genetic, other biological, and psychosocial factors.

2) A situation or condition that results from the coexistence of disparate or antagonistic qualities, identities, or activities: the national schizophrenia that results from carrying out an unpopular war.

3) A psychotic disorder characterized by loss of contact with the environment, by noticeable deterioration in the level of functioning in everyday life, and by disintegration of personality expressed as disorder of feeling, thought (as in hallucinations and delusions), and conduct called also dementia praecox

So in other words, i'm mad??
 

Few days back, my other personality surfaced, which i didn't even know of. my guardian angel said that i was totally a different being altogether, acting and behaving so drastically, almost the opposite of my usual self. then i switch almost instantaneously, back to my old me... and i couldn't remember much of what had happened earlier then when my "other half" took over, even with my guardian angel reminding me what happened earlier on.

i just totally didn't know.

guardian angel told me that my other split personality almost appeared evil... like a devil in me, contrasting to the happy-go-lucky and positive-thinking usual self i was... i am questioning myself for my evil half's existance too...

i guess this is something inside of me that i have to conquer and control... to rid of its "taking over" of my body... especially when i'm outwardly becoming depressed... i got a feeling it is when "she" comes out.

deja vu happened today... on 2 occasions over 2 simple phrases:
"guardian angel" & "will become mad one day"
what is so remarkably mind-blowing is the fact that it is said from 2 individuals that didn't communicate between themselves at all, but within the very few minutes i changed locations (from dinner in town, then coffee with another at gardens) these 2 phrases popped out almost as if some invisible spiritual being was instigating them.

yes, i agree to both of that phrases. i won't go into details about both of them becoz this is a public domain and i surely must keep some private issues of my life within my knowledge only.

i'm blessed to have met with help in improving and helping me cope and change and alter my ill-fated circumstantial plight... i believe i can become a solely "single personality trait" being, controlling and getting rid of the other "Her" inside of me, which often causes alot of people hurt and distress.
 

i know "Her" and i really hate "Her"... but what more can i do to kill "Her"??