On the flip side of the previous myth comes the belief that until you’ve spent [5, 10, 15 – pick a number] years training, you’re completely worthless in a fight. Hollywood is mostly responsible for this this one, portraying all martial artists as those who have spent decades training and meditating in temples (ironically, this is when they’re not portraying them as students who have learned all they needed to learn in two weeks). But some martial artists and some styles help to portray this myth as well.
Truth: Most decent martial arts training programs can teach you enough to competently defend yourself on the streets of suburbia in about 9-15 months. Will you be amazing in that time? No. Hollywood level? Absolutely not. Tournament winning? Depends on the tournament bracket. Taking on all comers? Nope. But against your average street thug (typically untrained and not really interested in a serious fight), you’ll probably do fine after about that much time.
Now, don’t get me wrong: after about a year of training there’s still plenty of room for improvement. Our program runs about 3.5-4 years for a black belt (longer for younger children). And remember, black belt doesn’t mean “expert.” It means “advanced beginner.” But expert level isn’t really necessary for most people for competent self defense.
Also keep in mind that some styles of martial arts specifically take longer to reach a level of real-world effectiveness. Aikido, for instance, is focused on a more “passive,” less destructive approach to self defense. It can be very effective – if you’ve got about a decade to put into practicing it. But if they aren’t supplementing the program with other things (and many Aikido schools do, to their credit), it will take a lot longer than a year to reach any level of effectiveness. But in most schools, 9-15 months will get you somewhere useful.