I'm a 28 year old male who has been smoking pot since the age of 14. I plan on quiting and spending the next 2 years getting clean. I want to go back to school at 30 and get a math + CS degree.

Considering I will be 30, and will have spent 14 years smoking pot, is school a complete waste of time? I've always been good at math, and a few years ago I taught myself intro to linear algebra.

tl;dr: is my neuroplasticity done?