collected vs self-collected

collected and self-collected both are adjectives.

Word	Noun	Adjective	Verb	Adverb
collected	No	Yes	No	No
self-collected	No	Yes	No	No

As adjectives, collected and self-collected are synonyms defined as:

Other synonyms of collected include equanimous, poised, self-contained, self-possessed.

collected (adjective)	self-collected (adjective)
brought together in one place	in full control of your faculties
in full control of your faculties