I have been taking 3 to 10..10/325 norco a day for the past 2 months..will I have heart or liver problems?

I just want to know if taking this amount of hydrocodone will affect my health long term? I don't show any signs of liver toxicity, but I am really worried that it will cause me to have a heart attack later in life. We had a family friend die of a heart attack from years of drinking and pain medication abuse. I have taken pain meds on and off for the past two years, but recently I have developed an addiction to norco 10/325. I take anywhere from 4 to 12 pills a day and I am worried I will have heart complications later in life. On a side note I have decided that I am going to stop doing this for a number of reasons and today is my first day going sober. I know the next couple of days are going to be filled with withdrawal symptoms, should I take a half of a pill to alleviate that or just go cold turkey? Please respond respectfully and thoughtfully as this is a very difficult time for me in my life, I need to stop this because I want to be a good husband and father in the future and this is really something that could kill me if I don't stop now.