I read every now and then the habits of the successful CEO's. On average, they sleep for 6 hours.
I used to be someone who always required 8 to10 hours of sleep. Now I'm at 6 hours. Imagine what 2 extra hours a day can do for you:
2*365 = 730 hours 730/24 = 30 days
Between the age of 25 and 50, you can have another 2 years of extra time to do anything you want. Imagine how many opportunities you are letting go of.