There is a temptation to discount the idea of contentment in favour of progress, as if they are somehow opposites. I would like to suggest that we need both of these things to feel fulfilled in our lives. The mistake that some make is believing that the acquiring of money and expensive things shows the world that they have progressed, but these shallow achievements will not bring happiness.
If the goal of progressing is to have more things and be more rich, then this will move us further away from contentment, because things and money do not last. Putting our hopes for happiness into these things takes control of our happiness and gives it to things which are out of our control. Things break and money is spent and gone as a result.