Discretionary chart reading is problematic as you can't backtest it and calculate the expected value of a trade.
Only trade set ups (the combination of entries, exits, and position sizes) that have positive mathematical expectation.
Get a simulator and backtest your trading ideas to find the expected value.
The software I spoke about in an earlier episode will do the calculations for you.
Expected Value Formula
E = (Ave Win)(% Win)-(Ave Loss)(% Lose)
Roulette
2 Kings