The idea of day trading is not alien to those engrossed in financial markets. It's a strategy where traders acquire and sell a stock within the same trading day, looking to profit from small price fluctuations.

What really is the essence of day trading? Simply put, day trading is the rapid buying and selling of securities over the course of a single trading day. The goal is to profit from short-term market fluctuations.

An important advantages of day trading is the potential for rapid gains. As a day trader, you're constantly on the lookout for opportunities to exploit small price shifts. An additional perk of day trading is that it can be done from almost anywhere, as long as you have an internet-connected device and a reliable internet connection.

However, it's also vital to mention that day trading has its setbacks. The same rapid market shifts that can generate earnings can also result in losses. Hence, it requires a certain level of expertise, self-control, and plans to be successful.

So, how can one become profitable in day trading? Let's outline some key tactics:

1. Begin with a Solid Trading Plan: An explicit trading methodology can act as your guide to achieving profit.

2. Utilize Technology: Good day traders leverage advanced technology tools for deciphering market behaviors and making sound trading decisions.

3. Keep Emotions in Check: It is essential to maintain a controlled and rational approach to evade reckless moves driven by fear.

4. Diversify Investment: Spreading investments across various industries helps to mitigate the risk.

5. Keep Learning: Even proficient traders constantly educate themselves about the emerging market patterns and trends.

In summary, day trading offers an exciting way to engage with the financial markets. However, it requires diligence, skills, and a consistent trading plan to gain success. Remember that while the rewards can be considerable, so too can be the possible losses. Therefore, it's advisable to approach day trading with a calculated mindset and here the preparation to learn. Happy trading!