1) It’s not by making large profits that money is made over time. It’s by consistently keeping losses small in relation to profits. 
2) Making Money and Being Right are at opposite ends of the performance spectrum, and — very surprisingly to most — most professional traders admit their primary job is to minimize losses, NOT focus on being right. Why? Minizing losses (well over 50% of the time losses can’t be avoided) ensures their average winner will be greater in relation to the average loser. 
3) No one knows FOR SURE how much profit any trade is likely to make. Fortunately, it is possible to know THE INITIAL RISK a trader is willing to lose. 
4) Projection of future prices are only a BEST GUESS, never a 100% certainty. 
5) Top traders only control three things all the time: Initial Risk, Exits, and EMOTIONS…