Write down your trading rules. Educate yourself as much as possible. Trends Reminder Geometric Progression. Sounds like a complicated math theorem. It's actually a good term for what happens inside of a big trend.
Epidemics are an example of geometric progression.
Starting with only a few people an infectious disease can spread in the population getting bigger and bigger. When a virus spreads it doubles and doubles and doubles. Market trends are no different. From nowhere violent market trends either up or down can appear. These trends often feed upon themselves and can quickly progress geometrically allowing the opportunity for huge profits if you were in early set with a trading plan.