The 52-year-old actor is "still totally crushed" but kids are his main concern, reported Us magazine.
"He can't believe this is what his life has become and he's in bad shape but the kids are the only thing he's hanging onto.
"He's been leaning heavily on his family and speaks to his parents and close friends and his manager constantly. His mom has been talking to him constantly," a source said.
Jolie, 41, filed for divorce on September 19 citing irreconcilable differences. The official statement from the actress said the reason for her decision is the health of the family.
On September 30, news broke that the former couple had reached a temporary arrangement that extends to October 20 and will allow Pitt to see the their six children Maddox, 15, Pax, 12, Zahara, 11, Shiloh, 10, and twins Knox and Vivienne, 8