While I'm in the US, I think what I am about to write is applicable no matter where you live.
First, most people never make a living driving race cars. It's a cruel profession and doesn't reward any sort of shortcoming. It requires a the kind of total commitment that is unusual in this world.
Plus you need sponsors.
So my advice would be to put yourself in a position to be independent. Then start racing cars at the local track. If you have the talent, it should be obvious right away.
Go to a driver's school. Not only will the instructors there recognize where you are talent-wise, but also where you are in your development and can offer better advice about how to proceed.
Even if you don't have the talent - I don't - racing can still be enjoyable. So I think driving even a low budget, uncompetitive racecar NOW is better than waiting until later. Experience is a great teacher.