Having sporadic moments where i seriously consider if i am approaching an episode, and start to plan ahead, for example, block my credit card, just in case.

Then all of a sudden, i spring up out of bed one morning, and the rest is history.

Lack of sleep is my biggest indicator.

And my vision is noticeably different. Very vivid, and intense.

I also find myself laughing a lot more easily and am extremely friendly. At least at first.