transference or counter-transference with a client as a counselor/addiction

How will you know if you are engaging in transference or counter-transference with a client, given your history and experience with a friend or family member that has struggled with addiction?  (As counselors, we may not and often do not recognize this.) 

300 words or more just a discussion question. Will need asap. Will check and put in grammarly and turitin for grammar and plagiarizing. Be professional act as a counselor when answering this question Ty