Once a _____ always a _______.

Once a ______ always a _______.
In my life there is so much of word that I want to put in to the blank above.

Know what is it?
1. Nurse
2. Writer - I wanted to become a novelist.
3. Blogger
4. Fashionista
5. Bookworm
6. Recipe-maniac
7. Etc.

Sometimes I find it very interesting to read some ridiculous topics. It is sometimes, make your stress flew away. But I should remind you all NOT to believe it too much.