Interesting read.

I used to drink enormous amount of coffee at my previous work (5-6 cups a day) and the overall anxiety just became part of my daily life. Then I decided to go on cold turkey which lasted for about 3-4 months. First weeks were rough, imposter syndrome kicked in like crazy and I wasn't able to focus at all.

Now I have my morning cup of coffee with L-Theanine and that's it for the day. It lasts, the anxiety is gone and overall effect is magnificent.