Teetotal

Explanation:
This is an adjective that describes a person who never drink alcohol.
Example:

1. My father used to drink heavily, you know. Every night he would have a bottle of Scotch. Maybe that's why I have always been a teetotaller.
2. I've got some soft drinks for Granny, she's teetotal nowadays.
3. I don't feel like drinking beer tonight, I'm going to have a teetotal evening.

Diary:
While I was doing the practise of mindfulness, there was a strong feeling of itch. I tried to scratch to relieve. And the teacher suggest us to treat itch as a tool to perceive and accept and be aware of the change.