.: ADVICE: Jealousy Is A Shaytanic Quality. Avoid Jealousy.

3 Secrets to
not being jealous of a fellow Muslim:

1) As a Muslim, like for your Muslim what you would like for yourself. Would you like it if a friend was jealous of your achievements? So don't be jealous of them just as you don't want your friends to be jealous of you :) 2) Know that Allah gives what He wills to whom He wills, and always with Wisdom. Allah always knows what is best. 3) What Allah gives to others can always be a test -to see if that Muslim passes Allah's test through thanking Allah more and through doing more good deeds to prove their gratitude or if they fail Allah's test through selfishness, arrogance and ingratitude. 

1 Secret to not being jealous of a non-Muslim's material things:

 There really is no reason why we Muslims should envy an unbeliever whose ultimate destination is Hell (unless Allah has Mercy on them and guides them back to Islam). As long as you're Muslim then you're better than the non-Muslim. And as long as you're a true Muslim friend of Allah who is righteous and tries your best to implement Allah's rules, then you are insha-Allah way better than that sinning Muslim. It's all about one's faith/Imaan.  Every one is equal to Allah, what makes us better than the other is in our faith/Imaan and sincere good deeds for Allah's sake :) Allah knows best :)