What shocked me the most is the pace at which you have to perform at to get a result which most likely won't come quickly (if at all). You can spend weeks trying to get a deal over the line only for it to fall through. I appreciate this is the case with recruitment as a whole.
Recruitment can often be glamorised as a high-paying job with mountains of benefits, but this is only the case if you are willing to throw yourself into the role head first and put the work in day-in, day-out. Despite constant support from the team, nothing is handed to you in recruitment.
Although technically classed as a sales job, there's no product like people. I can see why someone working in car, house or phone sales could think they would be good at recruitment. There's certainly transferable skills, but it's a completely different level when it comes to problem solving. People not showing up to interviews, client OR candidate, is just part of the day-to-day.
The phrase 'hitting the ground running' does NOT mean you'll make a placement in your first two weeks. It's not impossible, but highly unlikely. Some of the most senior figures at Navartis took in excess of 6 months to make a placement, and almost a year to pass their probation. As long as you are driving your input the results will come, but don't expect to make thousands in your first month because you'll set yourself up to fail.