I GM several games each with different systems through the week. However with GM'ing so many games comes a certain amount of drama. The type of drama I would have to deal with once two-three months under normal circumstances happens every two-three weeks as different groups cause drama unaware of eachother with players threatening to quit or just whining or bugging me.

I have been descelating these however after around three months I am running out of patience and I no longer feel like GM'ing on the grounds that each of the drama incidents take more out of me. To be honest I am really close to saying:"Okay. Rocks fall. Anyone involved in this conversation dies. It was not a pleasure playing with you." and moving on.

Now as to what I wish to ask. How can I relieve this pile up of feelings without doing something drastic?

As to respond to comments: What have I done so far.

• One player rebuffed me due to stress and this led to another player attempting to stand up for me. I asked the one that rebuffed to be more careful with his language and the player that stood up to not to do so again. They had started arguing and the player that stood for me way saying he wouldn't play with him.
• A player came up with an unique race and one of the other players
  asked several questions about it. Then the creator of the race stormed off and his girlfriend followed suit. I calmed the situation by changing the course of the plot
• A player stated that he could only be invested in one campaign. Another player said that one could be invested in multiple campaigns. The former player said 'Because not everyone is like you. Y'know, you being perfect and all.' which I interfered by saying enough and told both of them to knock it off.

The players are complaining about conversations out of the game and coming to me with their problems.

By rebuffed I mean he was rather hostile and got rather rude. They had to add some stuff to their sheet and when I mentioned it he lashed out.