Freedom is never having to worry about your next fix - not if, not where, not when, not how. It is never having to worry about needing to quit - not ever again.
And most importantly of all, freedom is worth all it takes to attain it, I promise!
If you have already started in. stay with it. If you are still worrying it to death, jump in.
Lots of of us here have been successful. You can be, too.
Just DO it!