If I quit my ministry job after only 5 months, will I be "blacklisted"?

In short, I graduated in May and have been working in a ministry which is notorious for very long working hours and crazy workloads. I knew it would be like this before I applied, but I didn't expect it to be so bad. On average, I log off at 9/10pm.

I'm thinking of joining other govt agencies, where the work-life balance will be better. Would quitting after only 5 months into a new job affect my chances? Thanks!