Dude. No single trade should worry you, losing trades happen all the time. If you risk 0.5% to 1.0% of your capital there isn't anything to worry about. The all in mentality will end in financial & emotional ruin.
Lol! Get a clue sport, listen instead of spouting off your lack of knowledge. Or maybe try google when you read a phrase you never heard.
Here's a lesson on what "climbing the wall of worry" means
http://www.rbadvisors.com/images/pdfs/Climbing_the_Wall_of_Worry.pdf

