Scope for CS at big age

Hello All

I am 53 now and took Voluntary retirement from a Pvt Company. Back of my mind I had an idea of doing CS all along my career which never materialised. But I still have that burning desire within me to do the profession. But before that I want to know, if I could succeed in my efforts, say in another 5 years or so, what is the scope available for me (example, ,practising, consulting etc.)  however small to cherish my dream for the rest of my life.