Paul says he has learned the key to joy, and it is contentment in any situation. Look at his words.
I rejoiced in the Lord greatly that now at length you have revived your concern for me. You were indeed concerned for me, but you had no opportunity. Not that I am speaking of being in need, for I have learned in whatever situation I am to be content. I know how to be brought low, and I know how to abound. In any and every circumstance, I have learned the secret of facing plenty and hunger, abundance and need. I can do all things through him who strengthens me. (Philippians 4:10–13, ESV)
Contrast this with the words of a poem written by 14 year old Jason Lehman and published in a Dear Abby Article which effectively expresses the way many of us live in the world. May we find greater contentment in the Gospel.
It was spring, but it was summer I wanted,
the warm days, and the great outdoors.
It was summer, but it was fall I wanted,
the colorful leaves, and the cool, dry air.
It was autumn, but it was winter I wanted,
the beautiful snow, and the joy of the holiday season.
I was a child, but it was adulthood I wanted,
the freedom, and the respect.
I was twenty, but it was thirty I wanted,
to be mature, and sophisticated.
I was middle-aged, but it was thirty I wanted,
the youth, and the free spirit.
I was retired, but it was middle-age that I wanted,
the presence of mind, without limitations.
My life was over,
but I never got what I wanted.