Yeah, it's a hopeful thought.
I highly recommend you check out this book. I was a neuroscience major in undergrad and the old dogma is definitely that past childhood things are set. Neuroplasticity is fascinating, and it's the wave of the future. It's not that changes are completely unlimited, but the advancements ARE hugely exciting.
My impression from my limited experience is that neuroplasticity beyond early childhood is limited but exists. I am 31, and luckily my brain has made enormous strides in the last 10 years It seems to be an exciting field, especially when you think that maybe we just don't know quite yet medically the most effective way to alter a mature brain.
BTW, I was delayed in an airport by myself for 3 hours and bought the book "How Doctors Think" cause I remembered that a umass applicant last year who was accepted 9 days after her interview highly recommended it for interview prep. I am not a huge reader, but I LOVE this book - really a page turner. If you haven't read it, I think it has some really helpful perspectives for the interview.