"So the best thing you can do is not to worry all the time about whether you’re doing the right thing."

This is a fascinating thread and I have a question for the OP. Is this quote an example of doing or not doing?

Is "not to worry" a DO or a DO NOT? It's a genuine question. I'm not sure of the answer.

I also rid myself of the nicotine addiction finally on July 14, 2015. I did this by committing to not take a puff that day, one day at a time. I committed on a public quit smoking forum and got lots of support for that. I did this every morning and said out loud "I will not take a puff today"...

so i replaced smoking with that ritual and the thought of smoking with the thought of my public commitment.

I agree with many previous comments and have learned from this thread. FWIW, regarding epigenetics, I believe I suffer from multigenerational Holocaust trauma.