Don't quit everything of course, but we tend to stick to things that give us less happiness than we realise just for the sake of pushing through adversity. Our whole lives are full of adversity and there's no shame in wanting something easier sometimes to help our mental and emotional wellbeing - not necessarily always of course, in fact definitely not always. Your pursuits in life should prioritise being happy, and one day they may be able to take on a call centre job at a time when they are more emotionally strong and resilient to the pressure but its okay to want to step back to find that resilience in yourself.