study. Around 1 to 1.5 hours per day should be okay
GET ENOUGH SLEEP. 11pm to 7am should be enough (emphasis on should)
Be friendly, but not overly friendly. No one likes suck ups, but everyone likes friendly people
spend your weekends and free time smartly
don't be scared to stand up to what you think
don't engage with toxic people or people who sap your energy away. Big mistake.
"Cool" is not necessarily "good". In fact the cool kids are often the worst type of kids
Have fun