On the surface, everything should ok. i'm 58, seemingly in decent health, have a lovely and accomplished wife, 5 intelligent, attractive children.
I'm in real estate management. business is not good these days but I'm not down to my last cent. Have good friends, variety of activities--reading , religious studies, Orthodox Jewish life , regular exercise, good family relationship. Have parents in their 90's but doing ok. I've always had existential dilemmas and questions, sometimes more intense than others. Now, I just feel that I've run out the string. my ;ife is routine, I'm not growing spiritually, my existence is purposeless. I'm a useless person. What should I do? What does G-d want me to do? Life is uninteresting. Thanks
Maybe you need to do something totally different, something you have been dreaming of your whole life but not have been able to realize until now.
Check things to do.
You might also be suffering from a depression. If so, Cognitive Psychotherapy and SSRI medicine might help you.