Left Back On Intentions.

How can one person be so ungrateful to all that has ever been said or done for? I have been nothing but nice. I am always the person with the most humility, and no care for material possessions. I have offered the most I can. Yet be treated back with such little appreciation, in fact complete isolation. I am angry, and upset to be treated this way. I wish everything for the very best to happen but probably been gossiped back in return with false accusations. I pray karma satisfy my vengeance.