Your post inspired me to sign up so this is actually my first post! So I am in the process of doing something extremely similar to you. A few differences...I am currently 45, I was worth about the same amount of money at your age, but I was not quite burnt out yet...at times I thought I was, but reality is that it is just life. I stayed and plugged away until 43 and retired after an opportunity presented itself to sell my company. I don't regret a bit and it really allowed me to have the next level of financial freedom that although not necessary is pretty damn nice. I spent the last 18 months traveling the world and unwinding & learning to sail. So actually now I'm in the process of selling my home in the great white north and relocating to the Caribbean. My plan is to have a small condo/home as a base of operations and a respectable and safe sailboat to spend a few years cruising the area. If you have never been tot he USVI/BVI's it is amazing...I am doing it!
Now your situation...I too say do it! Here is the thing, highly skilled and motivated people will always be in demand if you want to come back. I hired a guy who didn't start his career really until he was 30 but had hiked the Appalachian Trial, kayaked the Amazon, and basically enjoyed life vs. working for the almighty dollar. We've both chatted about it a lot and it really comes down to happiness. The happiest I've ever been in my life personally is when I'm doing something adventurous and challenging...others get happiness from raising a family in safe old suburbia, they are both great options if you are happy! The thing is a different location itself won't make you happy, but doing something you love just might. There will always be more time to make money. Hell, I have way more comfortable financial situation than you and I still have doubts and question myself...it is normal, but at the end of the day I know if I wanted to I could always recreate the income. But really how much is enough? Only you can answer that...but it is a lot less than most think.
In closing, congrats on your situation...the open water is intoxicating, and when you hoist that main and cut the engine to hear the beautiful sound of nothing with your boat being propelled through the water...priceless! So if you see a 100lb yellow lab sleeping on a sailboat during your travels, come on over for a sundowner, good luck!