mediumwhat am-i

I have joy in bringing two together, but darning my existence! My life hangs by a thread, filled with ups, downs and resistance!
Common Wrong Answers
“A wedding planner”
While a wedding planner brings two people together, their role doesn't involve 'darning' or being related to threads and sewing.
“A bridge”
A bridge connects two places and can metaphorically represent bringing two together, but it does not involve threads or sewing, making it unrelated to the context of the riddle.
“A pair of scissors”
Scissors can be used in sewing and cutting threads, but they do not bring two things together, nor do they relate to the joy of sewing as indicated in the riddle.