I searched and found a bunch of examples of how people to use it. It's really easy. You just use the search tool, then enter "presence of mind" or "PoM". I know these are advanced search techniques, but I am happy to pass them along. The short answer is: it's situational. Use your noggin.
Also, please skip the preamble and don't hit your Enter key after every sentence (or two) (or semicolon).
This kind of question might, early on, have been suitable for the SQSA thread, save that it really boils down to asking other people to do your homework for you.
Long time lurker first time poster.
I have searched and can't find an answer to this;
Is there an accepted time to use presence of mind?
After 4 stacks of AB? For a refresh to mana gem stacks on prolonged fight?
For a quick AB when moving?
Any of the above depending on the situation?