Hi and welcome Brazillian.
I smoked pot daily for 30 years.
There never was a day when I was able to say not today.
I think when you're addicted, discipline doesn't matter - I have a very strong will in most things - but I had no will with drink and drugs.
I had to accept that, and make major changes in my life.
I know it sounds scary...but I've never regretted changing my life and moving away from my smoking friends - I can be the real me now, and I have real friends who like the real me
D