Hi, I did. I quit almost 12 months ago. And yes, a bit of insomnia during the first month, then just anxiety and tremors for a while (nothing to worry about). But you can do it! Hang in there!
In 2 weeks I will complete my no-smoking year. I asked for a congratulations card and a huge present to my wife. I suggest you to do the same LOL it is a good motivational drive (impossible to receive a congratulation card from "my-wife-who-is-always-right" otherwise LOL)