Giving in to the caffeine

Okay, so as many of my family members know, caffeine has never been my friend. Ever since my days at the local bakery...getting a mocha freeze..and then having to sprint home...literally, (we lived close to the school), I have struggled with caffeine. However, when I continue to consume against my stomachs' will I begin to get very tolerant of caffeine...i.e. coffee...however, stomach problems are not my only side effect...I am like a person on speed when I drink a whole cup of coffee, I'm shaky, focused, fast, awake, energetic, and I can get a considerable amount done...or not not done if I am looking into something else. As of late, I have been reading about how caffeine is really not that good for you...so I want to wean myself off. I cannot. I wake up feeling great, but at about 10:30 I plummet into a glazed over mummy person...I need coffee...so needless to say I am now able to blog because I just warmed up a cup of folgers....someone help me...this could be the death of me and my tummy!