"One of the things that has helped me the most, especially recently, is removing myself from the stuff I'm not good at and bringing in people to help," says David Karp, founder and CEO of Tumblr Inc., in this episode of The Deal's Behind the Money video show. New hires at Tumblr include John Maloney as president and Jacob Bijani as creative director. "I'm much happier in my day-to-day work," says 22-year-old Karp (pictured). And as for Tumblr, "we're moving a lot faster than we have ever before." We asked Karp to share his experience and offer some advice to help other entrepreneurs just moments after he won the 2009 Silicon Alley Award for Most Loved Product or Service at Wednesday's Startup 2009 event, which was part of Internet Week New York. In the video, he also talks about the toll fundraising can take on a CEO, calling it a "mental sink." Karp recently raised a $4.5 million Series B from New York's Union Square Ventures and Boston's Spark Capital. (Click here to watch an earlier video with us where he talks about that process.) Watch the new video below or download it on iTunes. Also, check out our video with Mahalo.com founder Jason Calacanis, who mentions Karp as a twenty-something entrepreneur he admires, and our video with Cheryl Milone, founder of Article One Partners, which won the grand prize at Startup 2009, a $25,000 investment from Boston VC firm General Catalyst Partners. And stay tuned: We'll be posting several more videos from Startup 2009 Friday and next week, including one with General Catalyst partner George Bell, a judge in Wednesday's competition.