Confused on so many levels...

I love my job more than any person would in the situations I face. Today has been one of the roughest ones yet trying to figure out why I am not being involved in bringing the newest person to the reentry team. I was told that I should not worry about training anyone because it wasn't my responsibility but I am the only one that does this particular position and I do it quite well I might add...today I saw something happen right before my eyes that blew my mind...the person that used to work side by side with me was called in from another department to help train the new person. I don't know about you but I find that kind of odd. I find it interesting that although it is me who trained the past individuals I am not fit to train the new ones. I am really not understanding what to do or where to turn at this point so all I can do is pray. Pray that God shows me what he is trying to teach me from this instance. Everyone tells me to keep smiling but I am not sure how much longer I can last...