I am feeling very tired/sian working but if i decide to quit to take a break, i'm afraid of not being able to find a job. Hence i find myself often in this loop. Anyone feel the way?

Dude, I am in my 40s and jobless. I have almost no debt except for my $230k HDB loan, married but no kids with $200k cash and stocks and I still don't think its enough to last me till I find a new job

About 10 months worth. You will be able to find a job, don't use that as an excuse. Just YOLO and go for it.

It's good to take sabbatical leave (if employer approves) or just quit to take a break and do some soul searching what job is sustainable by doing it long term. I did that and I switched to a new industry, took pay cut and I am still in the same job & industry after a decade. Doing a job that I find meaning in it helps me find inner peace. It may look scary to quit without a job and with no income, but everything happens for a reason. It could be a blessing in disguise.

Do not tie up your whole identity to your work. Compartmentalize your lifestyle and as Rick said, find other constructive distractions (for myself, I hike frequently). Learn passive investing as having a retirement financial goal at least helps to keep your morale up with "working towards a goal". Practice Ikigai.