Katy Perry has vowed to continue to "move forward".

The 40-year-old singer has experienced a difficult year, splitting from fiance Orlando Bloom, facing criticism for her participation in a Blue Origin space flight, and a poor response to her 143 album, but she is ready for whatever comes her way in the future.

In a lengthy Instagram post reflecting on the year since she released 143, she wrote: "Through my years in the spotlight, I have been beloved, tested and tried. That's the journey. I am blessed to know that there's always two sides to each coin, and I learn that even when I hit tails, somehow through it all, I keep making my wishes.

"My best friend once gave me a framed 19th century book called What Katy Did Next. I've never read it, but the title has always stuck with me. That's the point - it's about continuing to move forward, and dream.

"Whatever comes next, I'm letting it unfold naturally. No forcing, no controlling - just trusting the angels, the fans, and the music to guide me where I'm meant to go. Please know this: my love for you is unconditional, and I couldn't do any of this without you."

The Roar hitmaker feels 143 was a way of "reconnecting" with her fans and she is "so proud" of the community her supporters have built around her and her work.

She reflected: "You KCs know I'm not one for anniversary posts. I tend to be mostly a futurist but it would be negligent of me to not acknowledge the incredible impact this last year has had on me.

"1 year ago, 143 came out and I took the weekend to reflect. Records are snapshots of an artist trying to tell their story of where they are now or have been, and hope someone will hear themselves in some of the messages.

"143 to me was literally me saying I love you to my fans. Looking back now, I realize it has been all about reconnecting to my fans through these songs and through this wonderful tour that has given me the opportunity to see so many of you again and for the first time.

"We cats (and rats) have been through a rollercoaster, but wherever the ride took us, we have been together. I am so proud of the community we are and growing to become.

"History is important, we learn from history, we are reminded of how to and what not to do when we look back. We celebrate the wins and reflect on the losses. All of it is valuable.

"Let's hope we get to evolve together for years to come and at the end of it all be proud and at peace with how we tried our best in this imperfect world.

"Lately I have been seeing 341 which has me thinking now after giving so much… do I love myself, finally? Well, I get the opportunity to answer that question anew every day. Today's answer is yes. I am proud of where and how I have landed in this moment. Proud of myself, proud of my fans and proud that I keep on swinging.

"Wrapping up the South American leg once again reminded me of what's real. There's no coincidence I would be doing that exactly one year from when I put out the album and played Rock In Rio in Brazil."