Is there any truth to the saying '99% of the world's millionaires have become rich by doing real estate'?
Most millionaires became millionaires by being very frugal and living well below their means, all the time.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Is there any truth to the saying '99% of the world's millionaires have become rich by doing real estate'?

### Response:
Most millionaires became millionaires by being very frugal and living well below their means, all the time.