Wow, oldie, but goodie. I found this in one of my old journals (yes, post high school, but not long out). Pretty impactful, yet simply put for a young person starting to navigate the world.
Let people be themselves. Acknowledge them (yes, that means lifting your head up from your phone for a bit). Let them see the twinkle in your eyes.
Unconditionally love them — just as much as you unconditionally love yourself. Big leaps start with small steps (and it only takes one to get you moving).