First, let's look at market prediction. Many market experts make predictions and some predictions were right and most were wrong. Wrong predictions were easily forgotten. I would incline to believe that the market is very hard to predict but IF observe long enough one can have a general feel for the market.
Second, what is emotion? What's in the mind of a driver first time on the road? He or she has to be constantly look out for other vehicles, traffic light, zebra crossing etc. YES, the first time driver is very tense at this stage. Overtime, the traffic rules sink in and everything is at ease. Of course, we cannot compare trading to driving. Trading is lot more difficult than driving in the third world countries where rules are bent.
In trading, it's all about the survival of our trading account. As long as we are in the market, we can learn from it and establish our own "flexible" rules. Why "flexible"? Market condition is not constant. As long as we are in the market, we can practise our trade and apply/test our rules. As long as we are in the market, we need capital. Once the money runs out, it's game over.
Don't plunge in where the angels fear to tread.
A bird in the hand is worth two in the bush.