Your identity transforms to the degree you immerse yourself in a new environment (mental or physical).
If you want to become an entrepreneur, you should flood your consciousness with audiobooks, podcasts, tweets, and books from entrepreneurs, and you should go put yourself in cities, masterminds, or retreats where they hang out.
The same thinking can be applied for any type of transformation.
The people, energy, emotions, and ideas you immerse yourself in will seep into your mind and body to the point where transformation becomes inevitable, and you didn't even have to try.
When you're immersed in something, you transform as a natural process of osmosis, like how a child learns a language effortlessly when raised in a household that speaks a tongue natively, or how a species evolves in response to a new danger in the environment it inhabits.
Evolution is a part of your nature, so long as you put yourself in the right environment with conditions that push you to evolve.