I'm a lot better than I once was. I started to become worried about my blood pressure and have dialed it back a bit. I used to primarily drink 4-5 Red Bulls per day with the occasional 5 Hour Energy, because Navy coffee (as the song goes) "looks like muddy water and tastes like turpentine." Then after getting out of the Navy, I realized that normal coffee actually doesn't taste like wastewater and I headed in that direction. Even as late as last year, I would have 1-2 dark roast K-cups before I go to work and then stop along the way for a large, black coffee (sometimes iced) with 1-2 shots of espresso, then probably another cup after lunch.
I'm still drinking 2 cups before I leave for work, but that is typically the extent nowadays.
For reference, during my 5 Red Bull per day and 16+ hour workday years, my blood pressure was recorded as high as 195/165. It seems that it even damaged my far-field vision as well as whatever that did to my heart.