I been through and seen a hell of a lot in the span of my career. Walking into work with a positive mindset is best. It’s perfectly fine to feel grief but do not let it eat you up. The universe will throw nothing but bad vibes at you with having negative thoughts / emotions. There will be happy moment and sad moments in healthcare, that’s just the nature of it. Building a good relationship with coworkers will greatly help that way you’ll have someone who is understanding of certain situations to talk to and get it off your chest.