if in USA , u can complete your B.S. degree in 4 yrs
then apply to university for your 3 yr Doctorates Program.
u will be 28-29 - barely old enough to know real world stuff
and seriously NOT middle aged.
use a library to learn about 'starting' a business.
the 1st 5 yrs u will b simply selfemployed.
seldom do u have an actual 'business'
learn the difference in terms.
a business is when you have 5 employees or more.
Even the u could be working 50 -70 hr weeks.
truthfully earning minimum wages when you do
actual bookkeeping taxes.
use a library to do your real world learning.
Finish college then start your business if you want.
i want to be physical therapist but im not with the whole go to school until you almost middle age work and study your brain to stress while being broke all to work and then not make that much while i work for a mean strict man.
or start my own landscaping business at 21 and put school on hold and have self made business until i want to do something else