Post paracetamol overdose?

I took an overdose of paracetamol and have been treated in hospital. However, I am a bit weary about taking paracetamol now. How long should I wait for my liver to adjust, before I take paracetamol again? One nurse said two years. A doctor told me that i didn't have to worry. What should I do? I don't want to damage my liver any more than it already has been.