In the field of medicine in general, but specifically in the emergency room the amount of content to be learned is vast and can be overwhelming. As a first-generation college student and minority woman myself I felt the draw towards self-doubt, intimidation right up to imposter syndrome many times. Had it not been for informal mentoring along the way (from mostly other people of color in medicine), I may not have continued. 

I am very sensitive now to these these tendencies in learners I teach, learners from college/pre-med level, medical school, residency and early career. The symbolic microaggressions are still all around in this field (think hallway lined with older white men in their high academic positions). The instituion of medicine and training to be a physician as a whole has changed very little in its culture. Mentorship both formal and informal is often the only avenue to acknowledge the risk to these learners and offer support and encouragement. 

https://www.psypost.org/2020/01/first-generation-university-students-are-more-likely-to-struggle-with-imposter-syndrome-55207

https://science.sciencemag.org/content/367/6479/749.2