Idiom Definition:
"to get it out of your system"
to do something that you have been very much needing or wanting to do such that the need or want is abated
Synonyms: abatement, allayment, alleviation, amelioration, appeasement, assistance, assuagement, balm, break, breather, cheer, comfort, comforting, consolation, contentment, cure, deliverance, diversion, ease, easement, extrication, fix, hand, happiness, help, letup, lift, lightening, load off one's mind, maintenance, mitigation, mollification, palliative, quick fix, refreshment, release, remission, reprieve, respite, rest, restfulness, satisfaction, softening, solace, succor, support, sustenance