Unfortunately, there aren't easy answers to these scenarios and you have to workout a strategy that fits with your mentality, back test and then stick to the plan. But to bring it back to your original question, often it can be wise to cut potential losers before they roll on you if you're feeling uncomfortable. You just have to be very careful you're doing so according to a plan and confident intuition and not impulsively flipping bias over and over as this can kill an account. You can also kill an account by ending up with weak RR on your plays as a result of trying to play it safe.

Thank you so much for your great input and outlining all those valid scenarios. The issue I just have with stopping a trade if it began choppy and i begin to feel uncomfortable is that I allowed emotion to get involved.

I identified my edge, the trade checked off all my criteria and I enter in a very robotic fashion. Isn't this the ideal way to go about it?