Brad Pitt has revealed he battled suicidal thoughts amid his estrangement from his children with his ex-wife Angelina Jolie. Last month, the actor's daughter Vivienne, 18, followed in the footsteps of her three older siblings and filed a petition in Los Angeles County Superior Court to drop Pitt from her name. In a rare interview, Brad, 62, addressed 'family stuff' and explained how the pain he felt was so 'oppressive', and while he would never act on it, he struggled to see a way out. He told Esquire UK: 'I was never suicidal in any way. It just was not my makeup. In fact, if I have any afflictions, it’s probably being a congenital…