Can you practice to be good at something? Is this where I say duh?

Can a complete novice become a golf pro with 10,000 hours of practice? - St. Petersburg Times

 

Testing researchers’ theory that 10,000 hours of deliberate practice can lift an ordinary person to excellence, Dan McLaughlin practices chip shots at Mangrove Bay Golf Course in St. Petersburg. McLaughlin had never golfed before he conceived The Dan Plan: to put in 10,000 hours of practice and become good enough to play the game professionally.