Getting discouraged

I want to quit caffeine, and ive managed a full detox multiple times. This time was around 8 or 9 months. I just fell off of the wagon.

Without caffeine I am notably less sharp. My work and hobbies require focus and constant learning, or staying awake through tedious trainings and lectures.

I hate being dependant on a substance, so I'm looking for advice on how to achieve the same level of focus and interest that caffeine gives me... So far my experience has been that I just cannot perform at the same intellectual level without it.

Hoping to hear any success stories that include new strategies for me to try.