Although I do not practice SFQ, I must say that for any type of personal development method, 30 to 60 minutes a day is normal, if a person wants to achieve tangible results. This means doing it every day.
On the other side there are so many different methods which are appealing to each of us. So we buy the program, but we may never start on it or just give it a mild try.
I agree with Steve that a method needs to be part of your daily life so that you can really benefit from it.
