It is true that Y Combinator is a startup accelerator and that their famous office hours are a great tool for entrepreneurs to use. However, looking in the mirror and talking to oneself may not be the best way to double one's revenue. While it may be a good starting point to gain insight into the goal of increasing revenue, it is only one part of the equation.

In order to make a meaningful impact on one's revenue, entrepreneurs must also take into account the current market trends, their customer base, and the resources available to them. For example, entrepreneurs must identify their target customers and analyze their buying habits in order to determine how best to increase sales. Additionally, entrepreneurs must consider what strategies they can use to increase visibility and grow their customer base.

In addition to these considerations, entrepreneurs must also identify the resources they have available to them and how they can be used to achieve their goals. For example, entrepreneurs should consider how they can use digital marketing, social media, and other tools to increase their reach and build relationships with customers.

In conclusion, while looking in the mirror and talking to oneself may be a useful tool for gaining insight into how to double one's revenue, it is only one part of a much broader and more complex equation. To truly maximize one's revenue, entrepreneurs must take into account the current market trends, their customer base, and the resources available to them. Therefore, simply relying on self-reflection is likely not sufficient for achieving meaningful revenue growth.