I have a lot of problems trying to quit caffeine. Ever since I was a young child, they gave me really powerful amphetamines to get me to focus. Then when I turned 18 it became much more difficult to obtain.
In the US, Ritalin/dexadrine/adderall are all class II controlled substances with similar restrictions to cocaine or fentynal, so in order to get it I would need to have a doctor's appointment every month, which wasn't only inconvenient but super expensive once I lost my mom's insurance.
So, dipshit that I am, I replaced it with megadoses of caffeine. At my peak, I was consuming 1g (yes, gram) of the stuff every day in the form of energy drinks. I am now down to 280-560mg per day on average. I have tried not drinking any, but the inability to focus and headaches mean that trying to cutback seriously puts my job at risk.
I really wish I could just get back on ritalin or something so that I can give my poor heart a rest, but I am afraid to walk into a doctors office after not going for years and asking for drugs.