I think for some actors this is very true. I spent a long time doing stuff in community theatre and I realised there were a number of different types of actors

I think for some actors this is very true. I spent a long time doing stuff in community theatre and I realised there were a number of different types of actors who approached the craft very differently but could turn in equally great performances. Some seemed to be able to simply put on a mask, behave in a particular way and then switch out of it. Others would get every much into embodying the character and needed to spend time thinking about backstories and motivations. The later approach seemed to be quite exhausting when the character was quite dark or troubled. I have no desire to ever act, but watching the process was always fascinating.