Rob Kardashiandoesn’t want to hide anymore.

After largely retreating from the public eye in recent years, theKeeping Up with the Kardashiansstar has been seen more on social media and around town — and a source tells PEOPLE a renewed dedication to health and fitness is to thank for his newfound confidence.

“Lately, he has been trying to work out more and be healthier,” says the source. “Right away, it makes him feel better about himself. He wants to be out and about.”

Kardashian, 32, showed off his slimmed-down figure whilecelebrating Halloweenwith his family. For the Oct. 31 holiday, Kardashian and daughterDreamadorably matched as Papa Troll and Poppy Troll from the DreamWorks’ film, complete with pink wigs. And despite his reclusive lifestyle over the past few years, he wasphotographed outside of a clubafter sisterKendall Jenner‘s Halloween/birthday bash.

“He enjoyed celebrating Halloween with his family and friends,” the source says. “Hopefully he can keep up with the workouts and continue to feel better about himself. Everyone wants him to have a more extroverted lifestyle.”

Rob Kardashian/Instagram

Rob Kardashian and Kris Jenner

But the source notes that it took a while for Kardashian to get to where he is now. (In 2016, Kardashian told PEOPLE he retreated from theKUWTKcameras because, “I gained a bunch of weight and was super uncomfortable in my skin. The whole weight thing really affected me.”)

“Rob has been having ups and downs for years. It’s been a sad situation, mostly because he disconnects from the world because he doesn’t feel well mentally,” the source says. “His weight gain has long been a struggle. It makes him miserable. A few years ago, he got to the point where he had gained too much weight for it to easily come off. It takes a lot of work and effort to get all that weight off. And it’s been a huge, mental challenge for him.”

“Day 1 all good,” he wrote, adding strong-arm, pregnant womanand Vulcan saluteemojis.

source: people.com