That was my biggest shock last weekend for my first adult game. Just the fact that the chat towards me seemed continuous for 90 minutes - nothing ever nasty or nearing dissent. Just loads of stuff like "in the back, Ref", "we'll take that one Ref", "how is that not a foul ref?" - but all done with a view to influencing me for future decisions. I'd not experienced anything like that in the Youth games I'd been involved with beforehand. And handshakes all around at the end, so I can't have done too badly
It's not personal. That's the mistake new refs make imo, they start to question themselves based on the chat from the players. When you've had enough use the stepped approach and most importantly, once you've told them player/captain that you're going to use the sin bin, use it!
I have used it effectively imo since its inception but during an observation last year (first game for 3 months and in a new county) I was rightly told by the observer that I didn't use it early enough. It was almost like the break had got me out of my rhythem using the stepped approach and then using the sin bin. Stayed with me and I always remember to follow the proven process every time.