I’m unhappy at my job but scared to quit without another one lined up. What would you do?

I’ve been feeling pretty uncomfortable at work for a while. It’s not one big dramatic issue, just constant stress and feeling out of place.

I keep thinking about quitting, and I’ve replayed the resignation conversation in my head so many times. But I freeze when I think about actually doing it.

My biggest fear is leaving without having another job secured and ending up stuck with no income.

How do you know when it’s time to leave vs. when you’re just overreacting? What would you realistically do in this situation?