I am 58 and in my 2nd quarter of school. You need to go for it as time will quickly pass and you will regret not going for your dream.
I only wish I had started 2 years earlier, but wishing gets you no place.
I do not think that is too old. I am 56 and decided I was not too old to get my Masters as a Nurse Educator. I still have a good 15 years and it has always been my dream to optain an advanced degree. Go for it.