This quote is a metaphorical way of saying that we truly discover ourselves when we experience life from different perspectives. “Trying on other people’s clothes” represents empathizing with others, understanding their views, and experiencing their lifestyles. It’s through these experiences that we can measure our own “size,” or understand our own identities, values, and beliefs.

In essence, Lennon suggests that personal growth and self-understanding are not solitary journeys. They require us to step outside our comfort zones, to experience new things, and to learn from others. We can’t fully comprehend who we are or what we believe in unless we’ve tested our beliefs against those of others.

In today’s world, this quote could be applied in many ways. With the global access that the internet provides, we have the opportunity to explore a plethora of perspectives, cultures, and lifestyles. By engaging with diverse people and ideas, we can challenge our own beliefs and assumptions, leading to personal growth and a more nuanced understanding of ourselves and the world.

In terms of personal development, this quote encourages us to be open-minded and empathetic. It prompts us to seek out new experiences and to learn from others. Whether that’s by traveling, reading widely, or simply having deep conversations with people who have different viewpoints, these experiences help us to understand ourselves better and to grow as individuals.

In conclusion, this quote is a call to embrace diversity and to learn from it. It’s a reminder that understanding ourselves is a journey that involves exploring the world around us and the people in it.