A trading plan is a written document you create before you enter a trade. It defines:
Setup: What you're looking for (e.g., "stock breaking above $150 resistance")
Entry: Exactly when you'll enter (e.g., "on close above $150.50")
Target: Where you'll take profits (e.g., "$160")
Stop: Where you'll cut losses (e.g., "$148")
Risk/Reward: Expected profit vs. max loss (e.g., "$10 profit vs. $2.50 loss")
Write down:
This is the hard part. When a trade moves against you, emotion says "hold, it'll come back." But your plan says "exit at stop." Follow the plan.
Related: Discipline, Stop Loss, Profit Target, Trade Journal