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How long does it take to become a good trader?

Something someone said in another thread got me thinking...How long does it take to be a good trader??? Not just profitable but consistant new account highs?
IMHO I would say 10,000 hours, thats almost 6 years of screen time. I put in +7hours a day on the us index's and 3-4 on the euro every night which I think really helped. And it took about 10,000 before my account stopped with the large swings and replaced with the more easy on the stomach new highs, higher lows.
“Well everything gets on you with time. You have to devote your efforts in specializing in trading”