It's not easy to explain but to make it short, in trading you can identify the end of a correction with the methods below:
- corrective price channel breaks,
- an RSI-break back in the direction of the prior trend.
Read this page for the full explanation
https://www.dailyfx.com/forex/education/trading_tips/daily_trading_lesson/2014/03/06/Confirm_The_Correction_Break.html
and this one as well
https://www.dailyfx.com/forex/education/trading_tips/daily_trading_lesson/2013/10/18/Basic_Tenets_of_Elliott_Wave.html
Hope it helps otherwise another method to look for
Thanks for the links. The second have great explanation and it is easy to understand. There is another link, that is suggested in the text, that is necessary too https://www.dailyfx.com/forex/education/trading_tips/daily_trading_lesson/2013/10/10/3_Simple_Steps_for_Using_Fibonacci_to_Time_the_Forex_Market.html