You can say that you are finished and believe so only once you have tried out all possible solutions and exhausted all possibilities yet failed.
You can say you are finished only when you find yourself standing all alone in the midst of all chaos and not a single soul to believe in you.
You can say you are finished when you are hundred percent sure that there is no more good you can do to people around you.
You can say you are finished when you cannot plant any more trees or your existence ceases to bring about any positive change in the 'nature' that we pray as god and as a mother.
You can say you are finished when you can't see the beauty in nature anymore, when you can't hear the gurgling sound of the river or the gentle rustle of the leaves in a breeze, when you can't smell the mud after the first rain, when your words top bringing solace to another soul, when you are unable to feel the warmth of a loved one in an embrace or a brief hug.
Believe that you are finished only when you meet all the above requirements.