Learning how to backtest ideas for entries and exits, either manually or with a computer, is very important; it was something I didn't realize I needed during my first year of real money trading and becoming proficient at it made a huge difference. As mentioned by others, additional things are needed too...
Before trading, you need a broader perspective about trading. Here is my broad view... https://www.elitetrader.com/et/threads/how-to-calculate-success-rate-of-our-trading-strategy.374681/
I totally agree. We as traders intend to trade with the trend. Our nacked eyes are sufficient to see the trend in chart.
Agreed. You won't find any squiggly lines on my charts. Not even volume. (Except for relative volume in my scanner) They're totally naked.
before all of them you have to be able to control your emotions or when you enter the market, it will ruin you! Also try to work a lot on demo and backtest your strategy