You decide to quit and you want it very much. Doing it w/o a doctor depends on many things. Can you talk to a doctor about tapering??
i just looked it up & it seems to be Darvocet ( in India)
I just wanted to say hi and welcome you to the forum. I am not familiar with what you are taking so I don't know if it is safer to taper or if you can quit cold turkey. Hopefully someone who knows more will answer soon.
Best of luck, and again, welcome :)