Having opted not to use this on Sunday (it doens't quite fit) here is a prayer by Eric Liddell:

Father, I pray that no circumstances, however bitter or however long drawn out, may cause me to break thy law, the law of love to thee and to my neighbour.  That I may not become resentful, have hurt feelings, hate, or become embittered by life's expereinces, but that in and through all, I may see thy guiding hand and have a heart full of gratitude for thy daily mercy, daily love, daily power and daily presence.  Help me in the day when I need it most to remember that:

All things work together for good to them that love God (Romans 2:28)

I can do all things through Christ which strengthens me (Philipians 4:13)

[God said], My grace is sufficient for thee: for my strength is made perfect in they weakness. (2 Corinthians 12:9)