Even if you're still wandering around in your pyjamas after seeing in the new year, you can rest assured that some of the biggest celebrity names probably are too, if their social media posts are anything to go by.
Here are just a few for you:
There were no half measures for Hugh Jackman, who saw in the new year watching Sydney's fireworks before strapping on his climbing gear. He and his wife Deborrah-lee Furness decided to scale Sydney Harbour Bridge. Don't look down!
It was back down to earth with a log fire and snacks for Ed Sheeran though.
Holly Willoughby decided to see in the new year in her bikini, before she returns to cooler temperatures to present the return of ITV's Dancing on Ice. Make the most of that sunshine, Holly.
For Ariana Grande, it was all about the music. Listen in and see why she delighted her fans so much.
Little Mix were full of promises for exciting things to come in 2018, we can hardly wait...
#HappyNewYear Mixers!! 💕— Little Mix (@LittleMix) January 1, 2018
2018! We’re sooooo ready for you, 2017 was absolutely amazing and this year is about to be EVEN better! We’ve got so much coming your way... Wait on it 👀😉 xx the girls xx pic.twitter.com/qiuDI8auWj
But if making grand plans is all a bit much, you may just want to lie down and think sweet thoughts for a day or so. Is this you today?
There's no time to snooze for Doctor Who - it's going to be a busy year for Jodie Whittaker, who is taking control of the Tardis. She looks like she's got her eyes on the stars.
If you don't have a sore head, you may enjoy this timeless classic (aren't they all at this time of year?) - Happy New Year by Abba. We don't know what Bjorn, Benny, Anni-Frid and Agnetha are up to today, but their official fan club has raised a glass to them, as have we.
From all of us to all of you— Official International ABBA Fan Club (@officialabbafan) January 1, 2018
HAPPY NEW YEAR! 🥂🍾https://t.co/Z6W18cExQJ
Madonna decided let her picture do the talking, with this arresting photograph of herself with her daughter Lourdes, declaring they were "ready for you 2018" .
Ellen DeGeneres was typically positive about what 2018 may bring, saying: "What a thrill to ring in a bright new year for the world!"
Happy New Year! What a thrill to ring in a bright new year for the world! (Will someone retweet this at midnight? It’s sleep time.)— Ellen DeGeneres (@TheEllenShow) January 1, 2018
But perhaps the final word should go to Will Smith, who is celebrating his 20th wedding anniversary with Jada Pinkett Smith. His new year message is all about why love is like gardening.
"I have learned to focus on HELPING you to BLOSSOM into what YOU want to be (into what you were born to be)... Rather than Demanding that you become what my Fragile Ego needs you to be."
20 Years Ago Today we held hands and walked naively down that aisle. Here’s what I’ve learned since. . Love is Like Gardening... I have learned to focus on HELPING you to BLOSSOM into what YOU want to be (into what you were born to be)... Rather than Demanding that you become what my Fragile Ego needs you to be. . I’ve learned to take pleasure in Nourishing YOUR dreams... Rather than wrestling with you to Fulfill my Selfish Needs & Satiate My Insecurities. . I have learned that Love is Listening. Love is Giving. Love is Freedom. . Happy Anniversary, My Queen! I am forever Devoted to Nurturing your Deepest Truth.