Your 50s are a time to start enjoying your dividends. However, you don't want to fumble the bag.
This quote means that once you have wealth and income, it's your responsibility to protect & grow your resources.
During your 50s, you can start DGI portfolios for your kids. DGI takes 20-30 years to produce significant income; therefore, your children will benefit from your proper prior planning.
But always remember to live below your means. Reinvest a portion of your dividends, so your income stream continues to grow. Life is good when you have money, so always keep growing your resources.