United Kingdom, Feb. 13 -- Lily Allen spent a few weeks at a treatment centre to work on herself for her children.

The 'Smile' hitmaker - who was reported to have split from her actor husband David Harbour - stepped back from her podcast for a mental health break, and now she has revealed more about her time away.

Returning to 'Miss Me?' this week, she said: "I went into a treatment centre for a few weeks, which was great.

"I did lots of group therapy and some like individual therapy. I needed some time and space away from everything.

"And I did a lot of shadow work - lots of work about my inner child stuff.

"It wasn't easy by any stretch. And it's a journey, it's a life long journey of healing. It's not a quick fix."

The 39-year-ol...