I did a very significant career change at an older age than you. However, not being marrierd at the time, nor having kids, my decision did not affect anyone else. A new job-career can be inspiring, provide motivation... however, it is very common to want to make a career change, even after a second career.
There are advantages in having a formal education, as just that opens doors not otherwise open. However, any job or career that has eligibility- qualification requirements, generally has such requirements to reduce liability. However, with that always comes bureaucracy, which happens to be a major factor with most for wanting a career change. So, in short, try to be sure you're not walking into the same displeasure in a different-new career.
Considering you are in a professional career, and if the above is correct (I could be off the mark), you might try researching other companies that operate more smoothly, or consider opening your own business, which may involve licensing, if you do not already have that.
With that said, Overall , I am happy with my career change. But I did not start out intending my career field. But what I originally chose, required a formal education. It was during my formal education, that I changed career direction. That change was directly related to my nonformal educational experiences in college-university. I was fortunate to make the career-major change early in my formal education. In short, if you do choose to make a career change, keep your options open.
My career change decision, was literally the scariest thing I have done in my life. I say that with having been in some exceptionally scary and dangerous life or death situations. The career change was not an instinctual reactionary act. My career change decision, I believe like your desire for this, was made and brought on over time. As such, it was a drawn out thought process in which I was literally gambling my future. It was a very emotionally provoking process. I imagine you will have a simular experience until you are sure your goal(s) are within reach.
Best wishes!