Qualities you need to get through medical school and residency: Discipline. Patience. Perseverance. A willingness to forgo sleep. A penchant for sadomasochism. Ability to weather crises of faith and self-confidence. Accept exhaustion as fact of life. Addiction to caffeine a definite plus. Unfailing optimism that the end is in sight.
It can be embarrassing paying someone a compliment, but, in the modern world, these don't even have to be done out loud. When you're scrolling in the morning on Instagram, don't just like someone's photo, but make a point of going into the comments section and write down one nice thing that you see or feel about that picture.