M.L.
I have been doing hair for about 9 years.
Before I went to cosmetology school, I played around with my hair and my friends/roommates hair and make-up a lot... coloring/cutting... I thought I was so awesome at it then... but after years of training and experience I realize that I had a knack and a passion for it, but that my early stuff was not good at all (technically)!
It's one of those careers that you either love/hate. I don't work in a salon anymore since I had kids (though I keep my education and license current at all times), but when I did, I would come home crying form severe shoulder and wrist pain, it can be very physically challenging, even if you stand right/wear the right shoes...
Also, some salons are excellent to work for, others not so much.
If you want to get a good career, then go to a great school like Paul Mitchell and get placed as an apprentice in a high end salon when you graduate. It can be brutal, but much better money and education than working for pretty much minimum wage at a place like ProCuts or something where you aren't going to learn much and there isn't much room for advancement.
It's fairly easy to get burnt out, but if you have a passion for it and work in a great environment, it keeps things interesting.