Proverbs 14 v 30 says

A relaxed attitude lengthens life

Jealousy rots it away

It's so easy to look at someone else's life and think that they've got more than you, their life is easier than yours, they are more gifted than you

but ....... as it says in Proverbs - jealousy like that will rot your life!!

Is that what you want?

Or do you want the relaxed attitude that trusts God for all areas of your life and as a result lengthens your life.

Romans 12 v 3 in The Passion Translation says - 

Instead, honestly assess your worth by using your God-given faith as the standard of measurement, and then you will see your true value with an appropriate self-esteem.

God created you for a purpose and a reason and invested gifts and character into you do that you can outwork your part in His plans. See your true value as He sees it and be content.