Hi Cagefighter, I'm sad to hear about how you're feeling but you know, you've worked hard to get to where you are in business. Why not let it help you, kind of 'pay you back'? Carry on with it but go buy your guitar/s now, being financially ok can mean you can buy something really class. Then use all your spare time to polish up your playing again and yes, maybe open mic nights to get you back in the swing of playing for others. Gradually let your love of music change the balance of your life until eventually it is your full focus again.
I personally don't think it's an either/or situation, if you chuck the business now you might have to devote so many hours to making a living that you have little time to give to your music anyway. That would defeat the object, surely? and you could regret your decision to pass up a good living which can support your music more easily? Meanwhile, lets hear some of your music yea!
Loz x