Heartbreak & Career Crossroads: Should I Quit My Job?

I'm resigning from my job because I'm emotionally drained from a toxic workplace relationship.  I'm terrified of making a mistake that could damage my reputation. I can't seem to move past it, and while there are other reasons, this is the main weight on my shoulders, pushing me to act quickly.  This situation is incredibly common; many professionals struggle with burnout and workplace relationships affecting their mental health.  Recent studies show a significant rise in resignations due to stress and toxic work environments, highlighting the importance of prioritizing mental wellbeing.  What steps can I take to mitigate the reputational risk associated with a sudden resignation?  I'm looking for advice on how to navigate this difficult transition while protecting my career.  How can I address this emotionally challenging situation while ensuring a smooth exit?  Any guidance would be greatly appreciated.