Day trading is a challenging, yet potentially lucrative method of trading. It involves making transactions of financial instruments within one day.

The appeal of day trading lies in the possibility to gain substantial returns in a short time. Even so, it's vital to understand that this form of trading includes its own set of risks.

Successful day trading requires a firm understanding of the trading landscape. It's vital to follow market news, grasping how various events may impact the price of shares you’re considering.

Furthermore, proper day traders embrace managing risk. This involves placing stop loss orders to limit potential losses and only investing cash that you can afford to lose.

A vital aspect of day trading is trade the day the ability to act swiftly. The markets can alter quickly, and the ability to make informed decisions on the fly can lead to successful trades.

One of the most helpful day trading techniques is called ‘scalping’. This involves making multiple trades rapidly, hoping to make money from small price movements.

Also, ‘momentum trading’ is another widely used technique. This strategy involves buying stocks that are rapidly increasing in price and selling them before the trend reverses.

Day trading is not for the faint-hearted. It requires a great deal of market understanding, fast decision-making skills, and a tolerance for risk. However, with the proper education, technique, and discipline, you can earn substantial profits through day trading.

In conclusion, day trading, or ‘trading the day’, is a challenging, yet potentially lucrative trading strategy. It requires in-depth market knowledge, quick decision-making abilities, and the potential to deal with risk effectively. With the correct approach and continual learning, you stand a chance to make worthwhile trades and increase your investment portfolio.