From what I have observed around me, those who are rich are not because of investment but on the contrary because they are rich they can finally invest like in property.
They work hard and are usually traders who sell goods or do business and one thing I see is that they still live simply even though they have the ability to buy luxury until finally their money grows and they invest and slowly they enjoy their life by going on vacation abroad or buying luxury goods.
What I can say is that they have a clear goal and only try to achieve that goal and then start to relax but still try hard to reach higher