Letter of advice - mobile phone addiction

poor posture

seek help from

anti-social

time management

build good habits

addictive / addicted to

academic results

have control over

socialize with others

obtain satisfaction

sense of accomplishment

stay away from

lack self-control

face the problem

distract sb from sth

get rid of

develop new/healthy hobbies

poor posture

alleviate

obsession / obsessed with

professional advice

mental problems

self-discipline

set a limit

isolated from others