Considering Teaching in Japan in My Late 30s/Early 40s — Looking for Real Experiences & Advice

I’m hoping to get some insight from people who have actually taught or lived in Japan, especially anyone who made the move a little later in life.

I’m in my late 30s/early 40s and exploring a transition into teaching in Japan this coming April. I’m currently completing my TESOL certification, updating my résumé, and preparing to apply to ALT companies (Interac, Altia Central, Borderlink, Heart, etc.). I’m also considering JET down the line.

A little bit about me (sorry this sounds like my CV lol).

I have almost 18 years of experience in communication, training, and people-focused roles. I’ve worked with children in after-school settings and caregiving environments. I’m drawn to Japan’s culture, values, and way of life, and I feel like this move aligns with a personal “reset” and new chapter. I’m financially stable, independent, and not trying to “escape” anything. Just ready for something intentional and meaningful.

What I’d really love to hear from this community:

1. Are there many teachers in their late 30s/40s starting fresh in Japan? How did you find it socially, professionally, and financially?
2. If you began your teaching career later in life, did you feel welcomed in the workplace and community?
3. Any advice for someone choosing between rural vs. city placements at this age?
4. What were the biggest surprises (good or bad) when you first arrived?
5. Anything you wish you had known before making the move?
6. How was your long-term stability in Japan- were you able to build a fulfilling life there?

I’m not expecting a “perfect” answer. I’m hoping for real stories, honest reflections, and the kind of advice you only get from people who’ve lived it.

Thank you to anyone willing to share.
I genuinely appreciate the insight and community here.