Lesson learn: Knowing when to sell

Last Friday, I have to choose between cutting Cosco or Goodpack. In the end, I cut Goodpack at 1.92 which I bought at 1.96, reason being it was a fake break at 1.95. I keep Cosco which I bgt at 1.63 - no reason to sell Cosco because 1.60 support still holds. Today, althought market surge, Goodpack end up 1.86 and Cosco 1.67 (I sold half of Cosco at 1.66). I am keeping the rest for more upside. Here are 2 contrasting chart.

Goodpack

Cosco