Change in polarity = when a support becomes resistance or a resistance acts as a support
1. A newly broken support can act as a resistance
2. wait for a rejection of the resistance(?)
3. Enter a trade when the immediate support (black line) is broken convincingly
4. Do not enter if the resistance is broken on the upside
Disclaimer: The analysis here is for education purpose only and should not be treated as a stock tip! TIPS=SPIT! Educate yourself and be responsible for your own trades!
All the best!