Try to estimate about the future and look at the past only to make the use of your experience in the past business, and with that try to best to increase the your sources of income and so with that you will be more richer within a shorter time period.
I have read an inspiring story of world's famous billionaires if you are going to read it too for sure you are going to get inspired.They have been rejected a lot of times and they suffer for many years but instead of giving up they are keep on going and moving forward with hard work. And the fruits of their hard work now did really resulted for being a billionaire.