talkin I think you are very wise and saying what I know to be true. I am in a dilemma over it.
I am very tired. January does not help. However, I can't not work, so getting the best out of my work for me needs to be a priority. I need for it to be interesting. I do need a better work/life balance, but I don't think I can settle just for doing what I already do in the same way for 30 more years. I can't just treat it like a job that pays the bills, I'm not wired that way. Don't get me wrong, I would LOVE to be! 
Atm, I am very tempted by the idea of having a chance to really develop a specialism within education and also become involved with the local university (my original career plan was to be an academic, but I couldn't afford a PhD which you needed in order to lecture in my subject), so I side-tracked into school and have been there ever since. It could potentially open doors for me.
If I do proceed, something HAS to give - I plan to give up part of my job if I decide to go ahead, so I am just teaching and studying.
I would leave teaching altogether but I genuinely have no idea about what else I would enjoy and the holidays do help my working-parent guilt with DS and DD. With that in mind, I could do with cultivating a niche for myself. Originally, that was going to be a leadership role, but I now think not for me. In this respect, the MA would be ideal.
There are many benefits for remaining with my current employer. Many. However, if I did decide to leave, the MA would not keep me there - it would cost me the fees though to go.
I don't know. I don't want to over-burden myself but I don't want to stay the same.
Hmm. I think I have a few weeks to decide.