Well first of all, welcome to Steemit!
Glad to have you here and that you enjoyed my post.
Seems like you really love your coffeine, I'll actually write a post about that in the future as well.
It can be quite true that you get more done without it.. your body gets used to it and just makes you think that you need it to function "properly".
Try going without it for a few days and instead drinking lots of cold water/lemon water, and start writing organized to-do lists so you don't have to stress over multitasking!