Hey there 
You don’t have to go to AA. But what everyone here will tell you is this: You. can. not. do. this. on. your. own. and. by. yourself. You need help. I cannot stress this enough.
So checkout other recovery programs available. You can find a lot of ressources here Resources for our recovery
And yes being stubborn and refusing to get help is a major thing for addicts. Great job on recognizing this and reaching out!