Trading can be a hectic endeavor must, especially for those who are not persistent in their trading journey, but those who put all their time and mind into trading will develop skills over time that makes them more stable in trading. So in conclusion trading is for the passive mindset and not for the laggy mindset.
Traders by definition have to be an active bunch, after all you need to read several charts and you need to do it more frequently the faster the chart moves, after all you need to interpret a chart of 15 minutes 4 times in the same period of time that you will interpret a chart of 1 hour only once, so I do not really agree with you unless you are actually talking about investors instead, investors can afford to be more passive in their approach to the markets as they are more interested in the long term than in the short term.
i believe, what the OP meant is active mindset as well. because he said, not for the laggy mindset, which means, this is not for slow or passive user. but he used passive mindset instead of active. anyway, we get the idea here. if you are actively trading, definitely, you will be very active and awake as you need to read charts and not be laid back. otherwise, you will miss the train. and won't achieve your targets.