This meta-analysis research cover all major domains in which deliberate practice has been investigated in search of empirical evidence. The authors conclude that deliberate practice is important, but not as important as has been argued.
Macnamara, B. N., Hambrick, D. Z., & Oswald, F. L. (2014). Deliberate practice and performance in music, games, sports, education, and professions: A meta-analysis. Psychological science, 25(8), 1608-1618.