I'm around your age and have been a secondary teacher since my early 20s - absolutely brilliant job and I would recommend it to anyone as long as you are
A) resilient to a degree. You don't have to be hard as nails - lots of different personality types can make excellent teachers. But you just have to have a minimum amount of grit so that you will not allow a class of kids to walk all over you. (And by "not allow" I don't mean you are expected to be able to magically stop them by force of personality. At times you may need to get outside help from colleagues, etc - that is perfectly fine, in facts sometimes it's commendablw. What is important is that you have that minimum amount of self worth, that you value yourself too much to simply stand there and allow a class to treat you like shit. Most kids are decent people. But like adults, they can act differently in a pack, and they can exploit weakness unfortunately..... I have met very few people in my long career who actually "can't teach" no matter how much support they are given - when that has been the case, it's been down, sadly, to the absence of that spark of resilience/self worth.
B) in love with your subject. Children deserve to be taught by experts who are passionate about what they are reaching - it's the only way they, themselves, can become passionate about it too.
C) unafraid of hard work. It IS intense, you are performing all day to an extent. (On the other hand, the long holidays, though most of us do work in them to some extent, are brilliant for recuperation - but in terms time irs a hectic, full on job.
If all these things are true, then absolutely go for it. It's a brilliant job, so rewarding, never dull. And I have known plenty of teachers join the profession at around your age. In many ways those can be the best teachers because they bring all that wealth of external life experience with them, and the kids can benefit so much from that.
Good luck!