Letter of advice - mobile phone addiction

build good habits

have control over

distract sb from sth

addictive / addicted to

time management

academic results

self-discipline

develop new/healthy hobbies

sense of accomplishment

socialize with others

poor posture

obtain satisfaction

get rid of

mental problems

set a limit

alleviate

poor posture

obsession / obsessed with

isolated from others

seek help from

anti-social

professional advice

stay away from

lack self-control

face the problem