This prayer, by Jeremy Taylor, 1613-1667, comes from the book "Valley of Vision." Its an excellent read!
"Almighty God, give to Thy servant a meek and gentle spirit that may
be slow to anger and easy to mercy and forgiveness. Give me a wise
and constant heart, that I may never be moved to an intemperate
anger for any injury that is done or offered.
Lord, let me ever be courteous, and easy to be entreated;
let me never fall into a peevish* or contentious spirit, but follow peace
with all men; offering forgiveness, inviting them by courtesies, ready
to confess my own errors, apt to make amends,
and desirous to be reconciled.
Let no sickness or cross accident, no employment or weariness
make me angry or ungentle and discontented, or unthankful, or
uneasy to them that minister to me, but in all things make me like
unto the holy Jesus. Amen.
footnote:*"peevish" is an old English word meaning
1.cross, querulous, or fretful, as from vexation or discontent: a peevish youngster.
2. showing annoyance, irritation, or bad mood: a peevish reply; a peevish frown.
3. perverse or obstinate.