I'm hoping i end up being successful this Time. Any tips/advice would be greatly appreciated.
Tip/advice: STOP HOPING. START DOING.
You are setting yourself up for failure. The addict's (yes, you are one) battle is mostly mental after the first 72 hours have passed. That means you gotta get your head right to win this thing. If you "hope to end up successful", it's likely that you will not. Your past failure illustrated you can never again have "just one". One exposure to nicotine causes an addict to relapse to the stage he was living previously. With 48 hours, the intake will usually be higher and more frequent than ever before. Now, repeat after me:
I'm done with this addiction.
Nicotine is no longer an option.
There is no such thing as "just one".
Clean out all of your stashes. Post roll. Keep your word. It's that simple. Not easy, but simple.