Under trade until you prove yourself

Do about 20-30 trades in real time. Even lesser if you plan to be an investor. These should involve a very small % of your trading capital. For eg: risk 0.50% per trade. You may lose money, that's ok, it is part of your education to become a trader. Loose less when you are learning. So even if you have a large trading a/c, risk small amounts while you are learning. Learn by making mistakes that do not cost you money.

After 20-30 trades, stop & evaluate your progress. Go through your trade journal. If you have lost money in few trades, consider them as your learning process. If you have made money then re-evaluating is most important. Having an ego, that you are successful, is a big enemy for your trading business.

When in doubt, get out!

One of the good methods a trader can follow to get out of an uncertain trade.

Many traders become clueless when they are uncertain about a trades direction. When you confront such situation, immediately realize what percentage of your trades were winners? For example, if you have had about 40% winning trades, ask yourself a question. What percentage of your trades were winners when you were uncertainty. Chances are that you would have none, if you have had the right observations of such situations.  It is very clear that when you are uncertain, you are bound to loose in that trade. So, it will be a wise decision to get out of the position and limit the risk on your capital.

If a lion hunting for its prey realizes that the prey is bigger and stronger than him, he retreats immediately. Such decision allows him to survive to hunt again another day. So, when in doubt, get out.