Some background first:
I'm an engineering graduate but I don't enjoy it (Family, culture, economy made me chose it). Previously, I've worked as an engineer at another company for a year. I liked the culture here. Pretty laid-back and the engineering challenges are not insanely difficult to overcome. So, I tolerated working here.
However, I've got a much better offer from another engineering company (3 times my previous salary) and I've jumped ship to here. Little did I know that this company's culture is brutal with its long working hours (10-11 hours working day despite the official one being 8 hours) and the massive amounts of difficult engineering work dumped on me daily with very tight deadlines. This coupled with my 1 hour commute to work is slowly driving me insane although I've only been working here for a month. I've totally regretted my decision.
I've always wanted to leave the engineering industry some day and try teaching. But of course I would have to take a big hit to my income. Being a teacher would pay even less than my first engineering job but my work-life balance would be way better (in my country anyway) and I would be doing something that I actually liked.
I don't have much savings because I'm a big spender (I have to change this bad habit of mine) but I have no debt and not yet married. Should I take this leap of faith? Any precautions I should take?