Avoid entering a trade on a false signal.
Avoid trading without any fundamental reason which can moves the market.
Avoid trading in volatile market specially when any news going to announce.
Avoid missing the real trading opportunities.
Avoid buying too high and selling too low.
Avoid the trading with psychological stress and financial pressure/crisis.
Avoid the rapid trading keep sufficient gap at least one or two hours between two trades.
Avoid always being on the wrong side of the trade.
Avoid trading with negative emotions like greed and fears.
Avoid making averages by expanding lot size in loss trades.
Avoid trading against the trend of market as trend is your best friend.
Avoid trading in live account until get more then 90% trading accuracy in demo account.
Avoid the predictions about markets. Only follow fundamental reason & technical trend...