Don't hold large sums of fiat currencies for too long. Always have a plan for your money. Invest it in different niches of the financial market, which are proven to be worthy on long term. Each person will have their favorite niches to focus. Personally, I like real estate very much, because it's a solid investment along the years, protecting your patrimony against inflation, but there are another alternatives as well.

The most important point here is to avoid holding fiat currencies. That is essential and applicable for every individuals around. Saving is a must, but to solely save isn't enough, you also have to invest.