In trading, you don't need to have 100% reason on all your analses to be profitable, if you pay well your stop loss, take profit and if you manage your ratio/ risk well.
It makes sense, let's make an example: I analyze 4 pair, with a risk ration of 1 in 4 each, ie I risk 1% of my capital to earn 4, the 4 analyses, in a single day. Let's say the top three lose, but...