This is the best decision you can take, Windy!
I am sure you don't want to waste anymore days of your life feeling the way you did.
You've already stopped! Now you just have to go trough those tough first week or two and you'll have the gift of sobriety again. Remember how good it felt ? It is amazing - actually - that is the best high you can have - getting high on life rather on pot.
Wish you good luck my friend!
Take care!