Should I consider cosmetology? Career change question and some background...

Hello. I am a married wife and mom, one daughter turning 5 and starting kindergarten in august. I am also due with my second (and last) child who is due in august. I have been soul searching and trying to find a career to go to school for when this new baby will be 18 months to 2 years old. I have tried community college shooting for an eventual AA and transfer to Sac state for a BA eventually but that just didn't work for me and was taking too long without results job wise. In the mean time I am working as an in home care provider for the elderly and disabled through a county agency. My only client currently is my grandmother and she brought up the fact that she wont be around forever and that I should find something to study and get a certificate for when she passes so I can still have a job.

Growing up I wasn't very girly, I am the perpetual tom-boy though I am very feminine at heart. I wasn't taught how to do my hair fancy like some people and rarely blow dry or curl my hair. Its either brushed down or up in a clip or pony. I am very intrigued by cosmetology and manicuring. I can see myself working in that career and being happy. I am thinking of going to beauty school eventually.

Here is my real question, can one be successful in the cosmetology/hair dresser field just from the training and experience you get in cosmetology school if you dont really know how to do hair before you go? I am worried that since I never learned growing up that just the teaching and experience might not be enough, that you might have to have real talent for it before the school. I hope the question makes sense...all replies welcome. Thanks in advance for responding.