Rule one: never risk more than 1–2% of your account on a single trade. Position sizing kills more accounts than bad strategy selection. Rule two: every trade has a written exit plan before entry. Profit target, max loss, time-based exit. Rule three: do not trade to recover losses — the market has no memory of yesterday and neither should you.
Rule four: respect IV rank. Selling premium when IV rank is below 30 is paying retail; buying premium when IV rank is above 70 is paying for crush. Rule five: journal every trade. Pattern recognition only works on data you actually wrote down. These five rules will not make you rich. Ignoring them will make you broke.