I entreat of you never to utter one word of complaint, but to cherish feelings of gratitude and thankfulness...

If Jesus had not died our sacrifice and risen again, we should never have known peace, never have felt joy, but only experienced the horrors of darkness and the miseries of despair. Then let only praise and gratitude be the language of our hearts. All our lives we have been partakers of His heavenly benefits, recipients of the blessings of His priceless atonement. Therefore it is impossible for us to conceive the low and helpless state ... from which Christ has raised us. When we feel the pains, the sorrows and bereavements to which we are subject, let not one murmuring thought dishonor our Redeemer.... We cannot determine how much less we suffer than our sins deserve....

Can we look upon Him whom our sins have pierced and not be willing also to drink of the cup of humiliation? Our sins mingled the bitter cup which He removed from our lips and drank Himself, that in its place He might put to our lips the cup of blessing....

The language of the soul should be that of joy and gratitude. If any have dark chapters in their experience let them bury them. Let this history not be kept bright by repetition.... Cultivate only those thoughts and those feelings which will produce gratitude and praise....

I entreat of you never to utter one word of complaint, but to cherish feelings of gratitude and thankfulness. By so doing you will be learning to make melody in your hearts. Weave into your experience the warp and woof, the golden threads, of gratitude. Contemplate the better land, where tears are never shed, where temptations and trials are never experienced, where losses and reproaches are never known, where all is peace and joy and happiness. Here your imagination may have full scope. These thoughts will make you more heavenly-minded, will endue you with heavenly vigor, will satisfy your thirsty soul with rivers of living waters, and will set upon your heart the seal of the divine image. They will fill you with joy and hope in believing and will abide with you as a comforter forever.  HP 36

Do not talk and amuse yourselves till all are too weary to enjoy the season of devotion. To do this is to present to God a lame offering. At an early hour of the evening, when we can pray unhurriedly and understandingly, we should present our supplications and raise our voices in happy, grateful praise.  Pr 189-190

"Now the God of hope fill you with all joy and peace in believing, that ye may abound in hope, through the power of the Holy Ghost."  Romans 15:13 (King James Version)