"We" can only control risk and even this is not 100%, you can wake up one morning finding out of company you sold hundreds of Puts been using asbestos in Baby powder. You can have unlimited correct trades in a row even in Indexes, but if you need to get out of brick that is falling, you won't be only one.
I have never meet one person who not had "falling bricks" experiences, it comes down to next time the splash does not take whole account and more, and becomes more a trickle of overall account. You have to have the answers before the question in this game, first one is risk of ruin. Many will agree not to risk more than 2% of your account, and in longer term trading or even swing trading, you can make much more than the risk.
"Bulls make money, bears make money, pigs get slaughtered"
Good trading to all.