The stability is just about living a quiet lifestyle without the problem of what to eat or what to drink. Financial stability is when we don't complain like other people about how to live a better life. People are really suffering and this has made their financial stability to be lower than normal. Some people are financially sufficient and can do whatever they like to do because they have the funds to handle their problems. Everyone aspires to be independent and go for what they are interested in.
Having the right mindset will go a long way to improve our financial lifestyle because what means a financially free life for you may mean another thing to another person and that is why we have to check the level of contentment in the individual, just like you rightly said living a quiet life with sufficient funds to pay bills and handle your things independently make a lot of sense.
So we have to be contented and build our life around our incomes to the point that we have a direction on what and how we spend what income we generate and making investments future and taking care of our current financial situation not disturbing others.