Thats weird. I would imagine being more relaxed and less anxious would help with acne if anything. I recommend a benzoyl peroxide product. I scrub with it a few times a week and it really helps cut back the oil and dead skin.
https://www.amazon.com/dp/B000NSIGE6/ref=cm_sw_r_cp_awdb_imm_t1_Gkm5FbNDA60QA
To get rid of my bacne I went to a dermatologist. They put me on anti-biotics (doxyclicline) which are actually a pain in the ass because of their inconvenient dosage timings and a clindamycin cream to apply after showering and before moisturizing. She also told me to use Neutrogena clear pore cleanser as body wash. Now my bacne is gone!
Also some facials places offer back "facials" which I imagine could be effective.