yAy....and, was it worth it?
Yes, for me, it was. Took some courage and support from people who know and love me to go and dare making a change, but I do think it's worth it.
In a heartbeat. I am much happier now than I was before.
Are there layers of false regrets & irrational fears?
Changing the status quo is incredibly difficult on a psychological level, so yes, there have been irrational fears next to rational considerations. Most fears were easy to trace back to simple insecurities regarding the future, though, and once reminded that there is no such thing as a "secure" future, they dissolved pretty quickly. It helps that my happyness does not depend on money, status, or things.
False regrets - not sure what you mean with false, you mean regretting to have done it without anything actually being worse than before? No. I have done a lot to be happy in the life/profession I was in before the change, and it didn't work. I am not willing to stay in a situation I am not happy in, at least not for long, so - no regrets.
Do you get a crazy confidence in yourself that you can do it again, anytime, anywhere for any reason?
I know that I will always find it in me to do it again. I have always been able to walk away from something I didn't love anymore, be that people, places, or professions, and try something new. You might say a core piece of me always stays unattached, but I know others who are very different.
Most of all, is it rewarding or am I just thinking the grass is greener?
That completely depends on you and the situation you are in, I couldn't possibly give you a qualified answer that could apply to you.
For me, it is rewarding. I am learning something new, and I love what I am doing. I am happy to spend the majority of my time with my new profession, and that is what counts most imo.
It was a risk, of course, because you will never really know enough about a profession/life to really be sure until after you have tried it - but that applies to pretty much anything else, too.