has never been happier.The 'Dirrty' singer - who gave birth to son Max Liron, her first child with husband Jordan Bratman, in January - admits becoming a mother has added an entirely new aspect to her life.She said: "I'm the happiest I have ever been in my life. I'm a very lucky girl. Jordan and I have been together for seven years now, and it's getting better every day. We've got a lot to look forward to. I'm just in awe of everything that is happening to us right now."Christina also revealed she finds criticism of her image painful, but does her best to ignore any personal attacks.She added: "To be honest, it does hurt because I try my best to treat people around me fairly and to be the best person I can. I'm spiritual and come from a family, especially a mother, that's instilled good values in me and kept me grounded, so that's what I have to concentrate on."