How old is too old? If you dread living too long, it may be time to rethink your attitude.

Recent advances in longevity research have led many retirees to embrace a “Live to 100!” rallying cry. Their goal: to stay alive for a full century.

But what if making it to 100 is more curse than blessing?

There’s nothing celebratory about living that long if you’re miserable. Your physical decline can sabotage your final years.

Here’s…