What are the most important things to remember while trading ?

It is a high-stakes game where many are lured by the promise of quick riches but ultimately face harsh realities. One of the harsh realities of trading is the “Rule of 90,” which suggests that 90% of new traders lose 90% of their starting capital within 90 days of their first trade.
Stop loss
Plan the trade
Trading strategy
Control your trading capital
Correlated stocks
Discipline
Risk management
Arrange sufficient capital
Determine market conditions
Learn trading discipline
Market risk
Patience
Profits occur sporadically
Start small
Study the markets
Understand securities
Avoid overtrading
Avoid penny stocks
Broker requirements
Consider rebalancing portfolio occasionally
Consider your risk tolerance
Cut losses with limit orders
Diversification
Do not average your trades