A man is not old until he has more regrets than dreams .

Software Engineer

Never. Why would you give up?  
  
 Unless your dream was to build a crypto company or something

Consultant

Because we would have picked a engineering branch that doesn't pay shit and fucked up career 
  folks should atleast get sleep at night right

System Engineer

Business Development Manager

Never give up till you die and are healthy enough to do something. If you can't run, walk. If you can't walk, crawl. Giving up is not an option. Atleast I think this way.

Solution Architect

Maybe you can emulate banks in this regard. Write off old NPA ( old dreams that are no longer feasible) to make space for new ones. The struggle will still be real, but only the struggle that would make it worthwhile

26-27, you'll know right   
 This is it   
  
 Why's your number 35

Men live and die by their dreams. But long after they have been abandoned they still smolder deep in men’s hearts. Some see nothing more than life and death. They are dead, for they have no dreams. 
                                                     - Griffith, Berserk

This world is made for failures. Average people do all the work hence its sustained. 
 Age has no role. Unless you apply to UPSC and other exams

Software Developer

Investor

At what age should one give up on their dreams and accept they are a failure instead of dying everyday?

Give up