Attainable and achievable by those who want it. Then again, it is not about the desire or intent but the sacrifices and execution associated with it.
Most people would say they want to be high performers. They will also define what high performance is. But then, when asked if they are prepared to do the work to get there, the response may alter, often drastically. It is a choice.
“It is not our abilities that make us who we are. It is our choices” – Albus Dumbledore in Harry Potter.