I used to worry about how long therapy should take...until I realized that it's MY therapy, so it takes as long as it takes, be that 3 months or 10 years. I think a lot depends on what type of therapy you are doing, and why you are seeing a therapist.

I can't imagine therpay only taking 3 months...it took me that long just to consider trusting my T! But, I suppose if you go to a therapist just looking for coaching or skill building and you go in without trust issues, then it's probably totally possible.

Like Farmergirl said, if you're working on the same issue for 10 years, and not making any progress, then I'd question whether what you're doing is actually working. There should be progress made, but there's nothing wrong with it taking a while.