I work in a fairly demanding work environment and have a big family and always thought this. But I found out I could do without caffeine. I replaced it with lifting weights four times a week and cardio 3 times a week. I sleep better, no longer drink alcohol.

It is nice to drink coffee of course. But I think it comes at a hidden cost. I feel much less stressed out now and I am more efficient at work too.

So perhaps you can try it out for just a month? Drinking no coffee and see how you feel?

I also went down the path for harder drugs, modafinil even speed for a while. But in the end it is not worth it.