Miranda Lambert remembered a "year of heartache and healing" in an emotional Instagram post on Tuesday (19Jul16), following her marriage breakdown.

The 32-year-old singer is marking a new chapter in her life after embarking on a romance with singer Anderson East and releasing her new single Vice.

But she has had a difficult year, and recalled the struggles she has overcome as she marked one year since she and ex-husband Blake Shelton announced they were splitting.

Alongside a snap of a music chart showing Vice in the top spot, Miranda wrote: "The last year of my life has been one of heartache and healing, ... Of learning to be honest .... Accepting the flaws and celebrating the smiles. Finding peace in dark places ... having some moments alone with me. Facing fears and feelings... All of them."

Miranda channeled her heartbreak into her music and ended up penning Vice, in which she sings about heartbreak and being lonely. As she continued her passionate post, Miranda told fans that she wouldn't have got through the breakdown of her marriage without music.

"I got to know my guitars...became friends with a pencil and paper ..." she continued. "Used melodies to lead me places I had never been.... Made music with my friends. Because music is medicine. This means the world to me. Thank you for joining me on this journey. #vice #musicismedicine."

While Miranda has moved on with Anderson, Blake has also found love again and is dating Gwen Stefani, with whom he worked with on TV talent show The Voice.

Shortly after the split, Miranda told Cosmopolitan magazine that she is still attempting to "process everything" and "figure out where to go and what happened".

She added that the end of her relationship had given had a new passion for seizing life.

"I just want to live life full of everything," she told the publication. "Some of that might mean nights on my porch crying, drinking whiskey, and going 'Man this sucks right now.' It's about living in the moment and feeling every tinge of pain, then waking up the next day and going , 'All right, I'm going to ride my ponies. I'm going to have a girls' night.'"