Well, for me, that was really my dream to have a real state business but my current status now won't allow me yet to do that business, I am just a simple man having a day job and have work also here in the bitcoin community, I just hope I can save now and invest with bitcoin so I can make my goal in the future.
I would suggest you to save 20% of the earnings from your daily job and save whatever you earn in bitcoin community and dont spend it anywhere, in this way you would surely be able to achieve your goal later on in future.
That much saving is possible but only if he do not have any responsibility of his family or if he is single, otherwise, nowadays the expenditures are much higher and in that situation no one can save that much which you are asking for, I think if a person have some responsibilities then he should have to save about half of his earnings from bitcoin and then have to start a small business as soon as possible.