---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/43458405.md"
description: "Find a trading system that suits you:1) Stock selection system. First, have principles and stay within your boundaries. Only trade within your circle of competence; avoid what you don't understand. Not all money is meant for you to earn; knowing when to give up is also a skill;2) Trading system. Maintain discipline and avoid impulsiveness. Buy with reasons, sell with conditions, not based on feelings. Trading is about response, not prediction;3) Position management system. Allocate properly, don't gamble. Define the upper limit for individual stocks and how to allocate assets across different risk levels. Position management is more important than stock selection. If the direction is right but the position is light, gains will be limited. If the direction is wrong and the position is heavy, you'll be wiped out in one go;4) Risk control system. Set a bottom line, don't stubbornly hold on. Determine at what loss level you must stop-loss and under what circumstances to go flat. Survival comes first; making money comes second."
datetime: "2026-08-18T11:21:04.000Z"
locales:
  - [en](https://longbridge.com/en/topics/43458405.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/43458405.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/43458405.md)
author: "[洺燕堂413](https://longbridge.com/en/profiles/23617015.md)"
---

# Find a trading system that suits you:1) Stock sele…