Not too late. But don't think for a second it takes you a year to get "good." Martial arts are a life-long journey, a lifestyle. You will get better, but it requires determination in training, nutrition, resting, and avoiding the pitfalls of steroids, partying and (too many or wrong) women. Repeat: there's no quick fix.
If by "good" you mean going pro eventually, you have 5 or so years to train before you can really start thinking about going pro. That's plenty of time to train to become good enough.
I couldn't have said it better, listen to this man!