We tend to think that being unhappy leads people to complain, but it’s truer to say that complaining leads to people becoming unhappy.
(Dennis Prager, American talk show host and columnist)

It’s so easy to complain, isn’t it? Often we complain when things don’t go right, or the weather is bad, or someone is mistreating us. Haven’t we discovered, though, that when we stop complaining, our spirits are lifted? Let’s make it our purpose to be grateful.

Give thanks in all circumstances, for this is God’s will for you in Christ Jesus.
(1 Thessalonians 5:18)