Keating, 36, is believed to have been in depression after the end of his marriage in 2011, following his affair with dancer Francine Cornell, reported Contactmusic.
"I'm back in a good head space, which is great because it gets scary when you lose it. I don't want to make mistakes like I've made again, so I'm very cautious," Keating said.
"But therapy, reading books like 'The Power of Now' and work have really helped me live in the present," he added.