Question special

Dear Speakers,
Think my follow up was missed, so asking this again in a separate question... I remember a comment in Matt Hueman's talk about needing to be passionate in order to do this kind of work, but also to have a short memory because often you might not know the future fate of your patients (when in combat situation) or lose patients due to cancer. It seems like a hard paradox to embrace. How can one be so caring and passionate to do right by patients but not get too attached so you can actually continue to do your work? Are there tips on being "all there" for the patients, but also not bringing the trauma home? (Probably good question for any great doctor and surgeon out there that manages this tough dilemma.)