The phrase "how to make a killing" commonly means how to achieve a very large profit or success, especially in business or investing. To make a killing in business, key strategies include adding value rather than competing solely on price, empowering and trusting your team to avoid burnout, maintaining good communication, and consistently driving sales efforts. Also, knowing your business numbers, budgeting carefully, and creating a memorable customer experience are essential factors for substantial success rather than just cutting costs or trying to be the lowest price option.

This term can also appear in entertainment, such as the title of films or stories, where it may refer to dramatic or criminal plots, but in general use it means to gain a substantial financial or strategic advantage.

For practical, legitimate success in business or investments, focus on these actionable points:

• Provide unique value rather than just low prices.
• Delegate decision-making to able team members.
• Communicate clearly throughout your organization.
• Keep consistent attention on sales pipelines.
• Stick to budgets and financial accountability.

These principles will help maximize profitability or "make a killing" in a sustainable way.