The great thing about NADEX is all trades have a max loss built in. Which allows anybody to trade freely and not have to worry about stop losses.
BUT, in some cases, when a chart has completely changed bias, it is worth mentally exiting to mitigate some loss.
In this case, watch how on /RTY Futures price breaks above the strike I sold and once price starts holding higher lows ABOVE the strike, it is worth giving up on it. Obviously, the original bias is just not there anymore.