I learned the hard way that when it came to my addictions, and substance abuse, I thought I had choices far longer than I actually did. It had a hold on me. I thought I was "choosing" to use, but..when I decided to choose NOT to use, it didn't happen so easy.
It's sorta like a dandelion, pull up the green part on the surface, but that long tap root stays alive and keeps on growing farther deep down, and putting up more weeds on the surface.
I'd suggest you act before you feel you NEED to act, it may be later than you think.