Out of all the verses in the Bible, these are two that I personally identify with the most. Our struggles with lack and opposition through the years has only made us stronger, and more grateful than ever for even little things that most people might take for granted. My "Gratitude List" might not change much from day to day, but I know what it's like to not have things others take for granted, and my gratefulness is deeper for it.
"You say, 'If I had a little more I should be satisfied.' You made a mistake.
If you are not content with what you have, you would not be satisfied if it
were doubled." - Charles Spurgeon
Being thankful for the hard times and being at rock-bottom is one of the most important things you can ever do. If not for what you learn during these times, you wouldn't really appreciate how amazing the good times are. One thing I've learned by watching others, holding on to grudges and resentment and unforgivness eats a person from the inside out. We should let the dark times help us appreciate the good times, and not spend our good times being resentful for the hard times we've gone through.
"Suddenly there was a great burst of light through the Darkness. The light spread out and where it touched the Darkness the Darkness disappeared. The light spread until the patch of Dark Thing had vanished, and there was only a gentle shining, and through the shining came the stars, clear and pure."
~Madeline L'Engle, 'A Wrinkle in Time'