The more you complain (even when you don’t say a word), the more things you’ll see to complain about. The very good news is that saying thank-you works the same way.
“Thou hast given so much to me; give one thing more -- a grateful heart. . . .” George Herbert
“(Today) I will give abundant thanks to the Lord. . . .” Psalm 109:30 (parenthetical added)