You study for and take the new mcat because it guarantees you'll be culturally aware and diverse if you can succeed on it (LMAO yes the AMCAS actually does say that). But seriously, listen to what people say, and make an effort to understand and help them. That's literally it. As you learn more and more about other people it'll come together and you'll be more understanding and better to address other people's needs.
Also, if you've had any adversity in your life it comes way easier, hence why most white collar doctors from privileged backgrounds have the empathy of the average dead person when interacting with patients, and only show up for less than the designated amount of time required, collect a check, and don't even bother with patients otherwise. Don't be one of them because it's inexcusable to be that callous and give that little of a **** about other people.
PS: social awkwardness dies the more you interact with people. Just put yourself out there, maybe you're naturally more shy and don't express yourself with bleeding heart passion by reacting strongly emotionally. There are more ways than just that that make you culturally aware and understanding. Just take them to understand others and even saying something like "I understand" or working your hardest to help them is cultural understanding and sensitivity. You have to find what suits your personality and who you are, and you can overcome anything with time and practice.
Find out what works for you. A lot of people will overgeneralize and assume that you can only be caring and compassionate in the most stereotypical fashion, but really there are a million different ways to be that way and those people aren't being culturally sensitive or understanding to you
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