the best advice, hm... I have couple of such ones but they are general and perhaps you can find out about this advice in the net, nevertheless I will share with you with pleasure.
1) Always try to develop your skills. The most part of traders, especially new ones, have a so called "sin". They explore new information within first several days of trading and then they just practice on demo. I am convinced that traders should always develop their skills even if they have been trading for a year or more. Trading is a flexible activity and despite the fact it consists of regularities, there are dozens of information which you can explore daily.
2) Watch for your progress. Have mistakes and losses? Nevermind. It's just a part of trading which allows you to become more successful. The matter here is to learn how to digest and admit these mistakes. In this case, the mistakes will be turned into an experience.