Letter of advice - mobile phone addiction

mental problems

time management

face the problem

professional advice

seek help from

academic results

obsession / obsessed with

sense of accomplishment

self-discipline

get rid of

socialize with others

poor posture

poor posture

lack self-control

stay away from

anti-social

isolated from others

distract sb from sth

addictive / addicted to

develop new/healthy hobbies

build good habits

set a limit

alleviate

have control over

obtain satisfaction