This goes along with gratitude, but with a slightly different angle. Complaining less means making room for focusing on what is good.
Two thoughts for today from the existential experts:
“This is the true joy in life, the being used for a purpose recognized by yourself as a mighty one; the being thoroughly worn out before you are thrown on the scrap heap; the being a force of Nature instead of a feverish selfish little clod of ailments and grievances complaining that the world will not devote itself to making you happy.”
— George Bernard Shaw (1856–1950) Irish playwright and critic
“If you have not slept, or if you have slept, or if you have headache, or sciatica, or leprosy, or thunder-stroke, I beseech you by all angels to hold your peace, and not pollute the morning… Love the day.” —
Ralph Waldo Emerson (1803–1882) American writer and activist