Support and resistance are probably the most talked elements of technical trading. Some trader’s only trades using S/R, they buy the support and sell the resistance. Of course nothing is fool proof, some days even the best of the best set up wont work, that’s trading. Cost of trading is some losing trades, you have to accept it.
Facts that you need to know:
The more times the old support/resistance levels are tested the more forceful it is if it is violated.
After a support level has been broken, it often acts as a resistance level; this is because traders want to limit their losses and will sell later,when prices approach the former level.
Easy way to trace historical support or resistance is to look for V shape pattern in the chart.
In the chart above we can see that price made several V shape patterns.