Don't do it!
Don't just have one, almost every time this will lead you right back into the smoking habit.
If you have just one, after you made the decision to quit, your subconscious mind will think you lied, so it will then have a hard time of trusting you in the future.
People that struggle to quit smoking use the words like "I am trying to quit".
My clients succeed because they stop trying or lying and they make the decision to quit.
It helps when you understand how the mind works. Your subconscious mind is an order taker and will carry out what you tell it - over and over again.
Your conscious mind is the logical part of your mind and your subconscious mind is your emotion mind.
You can check out my YouTube channel, it has a ton of videos that talk about the MIND and smoking.