I found myself having to compete against agency peers on client teams and was often excluded from internal client meetings. This was not what I expected from the ‘pitch’, and I noticed other, more junior staff, being treated in the same way.
The most useful piece of advice I have heard is "In a crowded marketplace, fitting in is a failure. In a busy marketplace, not standing out is the same as being invisible" from Seth Godin.
I was very honest with my buyers. I told them I was unstable. Including that, if I was up at 5 am, I was still partying with mates, clients, politicians, and celebrities.
I worked for a mobile tech start up in San Diego in the early 2000s. This had some rockstar founders and was supposed to be a huge thing. I was part of their round one of hires.