I don't think that you are ever too old to continue your education. If it would make you feel better about yourself, then give it a try.

I went back to school when I was almost 29. I can even say that I married my college sweetheart because he was also a school returnee after a decade away from school.

Listen to your gut instinct - if it says go to school, then do so. I don't think you will regret that decision.