Tak works very well in the background and shows up when you need and also when you least expect it. Just a calm focus similar to stimulants but without any stimulation at all. No wakefulness or alertness changes.
You have to get started on a task or project or even look something up that’s interesting. You’ll get lost in that topic or project for a while and really enjoy it but it’s not pushy like addy/ritalin etc.