Ann Voskamp writes about hard thanksgivings, giving thanks for all things, even sufferings. As Jesus did, giving thanks for the bread as he broke it and passed it to his disciples, knowing his body would soon be broken for them.
It came to me today there are hard promises in Scripture as well. For instance, "Blessed are they who mourn, for they will be comforted." Lord, I don't want to mourn, I'd much rather be happy, happy, happy, all the day long. But if I really believed the promise that God will comfort, I won't be afraid to mourn.