I done been through all emotions, from in shock, to keeping a poker face
To straight breaking down and showing all emotions

from Dr. Dre (Ft. Mary J. Blige & Rell) – The Message Lyrics on Rap Genius

Meaning

Dre basically saying he has been through every reaction after getting the news of his brothers death, he has been in shock, to keeping a poker face, to completely breaking down from the pain of the news.

To help improve the meaning of these lyrics, visit “The Message” by Dr. Dre (Ft. Mary J. Blige & Rell) Lyrics and leave a comment on the lyrics box