You can’t know what your limits are unless you push through the moments when it becomes painful.
I don’t mean painful as in Oh my God I can’t handle this. I mean painful as in I can’t believe that I’m still writing after 2 hours, or lifting these weights after 20 reps.
Your limit probably isn’t the moment when it becomes painful. That moment is just when it becomes painful.
What’s stopping you from reaching your limit is the seductive need for comfort.
And it’s because of that seductive need for comfort that entire lifetimes are spent avoiding a life’s work.
Pain before pleasure.