The rule is bullshit and the truth at the same time. Just imagine playing guitar from the beginning until you reach 10000 h of physical practice. Just say.. 10

The rule is bullshit and the truth at the same time. Just imagine playing guitar from the beginning until you reach 10000 h of physical practice. Just say.. 10h a day ..that would mean 3 years of extensive training. You for sure will be a Master after that. Or, just assume everyday 1h of practicing. That's 10000 days.. something like 30 years.. So this rule doesn't mean you can't be a Master if you didn't invest 10k h of practicing, but rather, no matter what you do,if you do it for 3 +x years, you sure will be a Master at that. Bullshit truth! Go for it, if it's something you can enjoy. Go for it, if you can use your aforequainted knowledge. Go for it, if you see some chances for being able to say "it enables me to work more for myself and less for one another". Go for it, if your life needs a complete change. But keep in mind, that you may need to lower your spendings. If you can't lower your spendings for some reason - then, think twice about switching careers. It's up to you, whether you can cope with possibly lower income. Keep us informed:)