Help for Parents with kids abusing drugs or alcohol.

I have heard the phrase, "Let go and let God." What does it mean?

I cannot be responsible for another's choices.
I must let the other person be responsible to God. I must pray diligently for God to work in his/her life.
I must accept the fact that my worrying will not accomplish anything; my prayers will, but not my worrying.

What does the phrase, "You did not cause it, you cannot control it, you cannot cure it" mean?

Nothing the parent did caused the addict to use and nothing the parent does can stop the addict from using.
Only God can change and bring about a cure in another's life as he/she turns to Him.
I am not God; therefore, I quit trying to control the addict and ask Him to work in his/her life.
Re-read the first answer to the question: "How do I deal with the guilt I feel over my child being an addict?" in the section called Parental Pain where the parent quotes the addict daughter and what a group of alcoholics/addicts said about who was responsible for their using and drinking.

Read the words of parents who had three of their kids go through treatment.

With our first chemically dependent child (C.D.C.), we thrashed, rationalized and deluded ourselves for three years before we insisted on treatment. Finally, one of the school counselors phoned to say our son was out of control and should go into a treatment center immediately, not "let's talk about it" but "get him there today even if you have to tie him up and carry him ."
With our next C.D.C., we waited three months until school was out.
With our last C.D.C. we waited three days. She was "turned in" by her then-and-still best friend.
The treatment time to get back to a sober life was proportional to the delay before we took action, about 1 l/2 years, about 2 months, and a couple of weeks.