Common 0DTE Mistakes: The Self-Inflicted Losses That Make a Hard Instrument Harder
Most of what goes wrong in same-day options trading is self-inflicted and avoidable. Oversizing, holding a losing position into peak gamma, chasing fills in a fast market, and trading with no exit plan are the recurring errors, and each maps to a specific mechanical feature of the instrument. Here is the honest treatment: what each mistake is, why it is so costly on 0DTE specifically, and the discipline that removes it, without pretending that removing it guarantees anything.