Practice Won't Make Perfect, But Deliberate Practice Might!

Deliberate Practice:
You could say that the difference between practice and deliberate practice comes down to your comfort level. Regular practice is fun — you get to do what you enjoy, and hopefully what you're good at, for a handful of hours a week. Deliberate practice requires spending lots of time outside of your comfort zone, working at the things you're lousy at and accepting criticism from someone smarter than you. After all, if you only practice your strengths, you'll never improve your weaknesses.
Deliberately Practice!