Many Psalms encourage the reader to "remember" - remember all the different ways that Lord has forgiven, helped, saved and blessed. Donald Deffner picks us this thought in the following prayer:
Lord thank You
for the gift of memory
with its moments
of delight
for the joys of yesteryear
which compensate
for the distresses
of today
But grant me
an avowed distaste
for living in the past
when opportunities for service
that more excellent life!
beckon me
in your world
today
From "Prayers for People Under Pressure" page 23