The oldest of four siblings, David and his family moved from Slovakia to the United States when he was just 6 years old. The Dobriks settled in Vernon Hills, which is a suburb outside of Chicago. As viewers of his vlog channels will know, the family moved into the same apartment complex where his future assistant, Natalie Mariduena, lived.
David played tennis competitively, and he qualified for Illinois state tournaments. He's shown off his tennis skills in several videos.
Upon graduating high school in 2014, David was given an ultimatum by his parents: go to college or move out of their home.
David decided to take his chances, and he moved to Los Angeles shortly after his graduation. He had begun his Vine channel in 2013, and he dedicated his full time and attention to it when he was out in L.A. He ended up moving in with several other aspiring Vine stars, and they all dedicated their time to creating comedy videos on the 6-second video app.
Many of these other aspiring Vine stars are now members of the vlog squad, including Durte Dom, Scotty Sire, Toddy Smith, Jason Nash, Heath Hussar, and Zane Hijazi.
The others are all YouTube stars themselves now, including Gabbie Hanna and Liza Koshy (who is also David's ex-girlfriend).
The vlogger told Forbes in 2019 that he struggled a lot in the beginning to try to make a name for himself. He also doubted whether or not he would ever be successful.
"We were at the grocery store and buying peanut butter and bread, and other groceries, and the total came to $25. I looked at my friend and said, ‘I don’t know if we can do this.' And he was very confident in the beginning but he said, 'I had no idea it was going to be like this.' It was just this moment of panic," David recalled. "I just remember how scared we were."
David and his friends did have a big following on Vine, and he recalled having multiple profiles to feature different types of videos. He would get also get paid when other pages re-posted his content, which was how he began to make a living.
When Vine shut down in 2016, David had already been vlogging on YouTube for a year. He realized that the app was declining before that, and he had made the switch per the influence of then-girlfriend Liza.
"I met Liza Koshy around that time and she was filming a vlog and I really liked that it was a small camera and you could just record your whole day," he said of forgoing renting expensive sets or doing big productions for his channel to Forbes. "That was so cool! I filmed my first vlog and I think it worked because I wasn’t trying to make it work. I was just doing it for my own enjoyment."
That first vlog would look far different from David's known style now. Without the glitz and glam of giving away amazing prizes, David instead used an age-old YouTube tactic (and the future name of his merchandise line) Clickbait. The 2015 video teased putting a puppy into the microwave.
For several years, David had an intense schedule when it came to putting out videos; he was posting three times per week.
In April of 2019, he took a short hiatus from posting so he could put out his 420th video on April 20. He even considered having the monumental video be his last ever. David's since posted one video per week, but he has upped the ante for his videos.
