Shawn Mendes has a feeling 2024 will treat him better.

While celebrating the new year, the "Mercy" singer reflected on some of the challenges he faced in 2023 and the lessons he learned along the way.

"The biggest lesson for me this year has been to accept and welcome the lows of life," Shawn shared on Instagram Jan. 2, "not to constantly need to change or fix something in order to feel high again, because i know if i really slow down and listen when i'm low there's always something to hear."

It was music that taught the 25-year-old how to embrace the imperfect parts of life.

"I found that in moments of extreme anxiety or fear," he explained, "if i sat down with my harmonium and allowed myself with full trust to sing whatever came out it would often ease the pain."

Although it was difficult at first to sing out loud without the practice to sound flawless, Shawn said he began to accept himself more and more.

"After a while i actually started to fall in love with the dance between the 'right' and the 'wrong' notes," he continued. "I realized there were only moments of bliss and euphoria from the 'right' notes BECAUSE of the 'wrong' notes. The only reason i can sing in key is because i've learned to listen."

Shawn—who released his last album Wonder in 2020 but canceled the tour in July 2022 due to mental health concerns—posted the message alongside a black-and-white video of himself playing the keyboard and sharing his raw vocals, as his way to ring in the new year.

Keep reading to look at how more stars celebrated New Year's Eve and rang in 2024:

The "traitor" singer wished everyone a not-so-sour New Year's, writing that she's "so excited for what's 2 come."

Expecting her first baby with husband Simon Tikhman, she showed off her baby bump in a sheer top on NYE.

The couple shared a romantic kiss in Paris as the clock struck midnight.

The pregnant actress quipped that chef Gaby Dalkin "made 29 deadly pizzas …. Mostly for me! Happy new year!" 

The Golden Bachelor star had a romantic evening with his bride-to-be. "Relaxing in a New York State of mind waiting for the ball to drop," she wrote on Instagram, "and wishing everyone a happy, healthy and joyful New Year."

The "Feather" singer got the party started in Times Square.

The two comedians joined hosts Andy Cohen and Anderson Cooper during CNN's New Year's Eve special.

It truly was Barbie's World in Miami as the rapper performed during a NYE party.

The TikToker rang in 2024 by watching Nicki Minaj perform at E11EVEN Miami.

The Uncut Gems actress also stepped out in a unique ensemble for the Miami bash.

He hit the stage in New York before the ball dropped.

The influencer celebrated the countdown on Snapchat.

The Little Mermaid actress shared photos from 2023, including a selfie with boyfriend DDG. "2023 is a year i will never ever forget," she wrote on X. "looking back on this year i can’t believe this is my life, i’m so thankful to God also thankful to all of you for your unwavering support. let’s bring in this new year stronger than ever, life is what we make it."

"Wishing everyone a Blessed year," the Mean Girls star, who celebrated the holiday with husband Bader Shammas, wrote on Instagram. "May it be filled with Love, Good Health, Peace and Happiness! Full of gratitude."

The actress shared her post five months after the couple welcomed their first child, son Luai.

Victoria shared photos from her New Year's Eve dinner with her husband and her parents. She captioned her Instagram post, "Creating memories this NY Eve x family time really is everything x I love you all so much @davidbeckham @jackie.adams_ xxx."

The Vampire Diaries actor wrote on Instagram Dec. 31, "Yeahhhhhhh 2024!"

The singer shared a montage of favorite moments of 2023, including a video of herself kissing fiancé Jutes.

The Party of Five actress shared a message reflecting on the hardships she faced in 2023. "This year I went thru a lot no one knew about. And was grateful for that privacy," she wrote on Instagram. "I had the greatest time being a mommy at home with my kids. Learned to be a better baker. Learned it’s okay to take time for myself mentally, physically and emotionally. Did a lot of praying and manifesting. Belly laughed more than ever. Had the longest cold of my life. Was forced to have more faith than normal. Learned to love working out as a gain for my mental health. Took chances on myself and my bigger dreams."

The politician was surrounded by his pet pig and Yorkie in his New Year's message.

Travis Barker's 18-year-old daughter showed off a green hairdo for New Year's 2023.

While Ryan Seacrest hosted Dick Clark's New Year's Rockin' Eve, his girlfriend was close by cheering him on.

The "Wild Ones" collaborators lit up the stage on NYE.

The Kardashians star shared that Liquid IV is a "NYE MUST" in a sponsored post to ring in 2024.

"Good bye 2023," the Inglorious Basterds actress wrote on Instagram, alongside a photo of her and Norman Reedus' daughter Nova. "Can’t say that you brought out the best in us all. Here’s to more unicorns, humanity and empathy."

The Jessie star wished her followers a wonderful 2024 on Snapchat.

The Real Housewives of New Jersey star shared a smooch with husband John at the stroke of midnight.