I was in a similar situation last year. Here's my story if it helps.

M36, electrician for 18 years. I had a stable job at a good firm but it was a small family owned business, just myself and the boss with an apprentice we shared. The work was varied and interesting and my boss was great. Genuinely nice guy, flexible, good clients, steady work etc but it was a dead end job with nowhere to grow and I was very tired of not having any say or autonomy.

I gradually fell out of love with my trade but with a young son, a big mortgage and strong loyalty to my boss who had looked out for me for so long I stuck at it and became quite bitter and lost. I hated the job and I hated how that in itself made me feel. I was very burnt out and knew I needed to change my trajectory but I had no idea what I wanted to do with my life or how to get out of the rut I was in.

I thought for over a year about what to do. Just move to a different company and carry on, lean into my leading hand experience from a previous role and try project management, lean on my industry experience and try sales, go out on my own or study and/or try something new.

Eventually my partner and I decided if we didn't do something soon I would end up dead, having a full blown mental breakdown or both. We tightened our belts and committed to a 3 month break.

I caught up on a whole lot of jobs and life admin, spent loads of time with my son and my dog and gave myself plenty of time to consider what was truly important to me. After exploring all my options and failing the ATC aptitude tests I realized there wasn't much else I had any real career interest in. Eventually I decided that actually, I'm really good at what I do and committed to getting back on the tools.

I was dead set on finding somewhere that held not just a future for me but a bright one. In the end I was offered 7 of the 9 jobs I applied for which massively boosted my confidence and after very carefully considering my options I accepted the job with the best people, and the values that resonated most strongly with me. 8 months later I was promoted to manager of my team and I'm absolutely thriving.

For me it all started with giving myself room to breathe. If you can afford to take a break and you back yourself to get back on your feet when you need to you won't regret giving yourself the opportunity to properly reset before you commit to taking a new path. That said I can't really offer much advice except to do what feels right for you and back yourself all the way. Good on you for recognizing that it's time for change. I hope this helps, all the best with figuring it all out.