Welcome to the forum. Like Mera said, I was functional until I wasn't. I never lost my job, never got arrested, didn't lose my family. Did lose my self respect and wasted a whole lot of time and money.
You'll know when you're ready. Until then, read around. It's not easy. I'm still trying to convince myself to quit smoking. Should be a no brainer, right?
Keep coming back. We'll be here.