I just heard it in an IELTs preparation video on youtube and googled it for definition but couldn't find any. Does "to get (one's) thoughts centered" mean to relax? or perhaps if somebody is distracted by a whole lot of things to think about and have scattered thoughts and ideas in his or her mind and then he or she finds a way to focus on one of them or the common ones. Would anyone kindly explain it to me? Also tell me if it is an idiom. Thanks.
Regards, Aamir the Global Citizen