Paul is writing to the Philippians from prison and yet he says he knows what it is to be content! For Paul, contentment is not found in circumstances, but it is always found in Jesus! Many people struggle today with feeling content and that is because it is based on our situation. In these verses we see where true contentment is found!
English Standard Version
10 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. 11 Not that I am speaking of being in need, for I have learned in whatever situation I am to be content. 12 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. 13 I can do all things through him who strengthens me.