No it's not.
Of course your success will depend on how committed and tenacious you are, as no doubt there will be some age discrimination.
However this sort of discrimination is slowly surprisingly becoming less of an issue.
I made the move in my late 30's from a career in aviation (737 first officer) to a career in Software (although I did have a rusty old related Degree) and found age not to be a real show stopper issue.
Good luck.