I did a little research on this a while back and discovered that a lot of the strong weed has Durban Poison
in the genetics. All the stuff called cake, ice cream or gelato comes from the same lineage, iirc.
Every time I smoke any of that stuff I get paranoid and agitated.
They basically took all the strongest weed from around the world and cross bred it to get the strongest hit,
but that's not what cannabis about, in my opinion.
I use cannabis to relax and to connect with things on a higher level. I don't use it to trip balls.
I prefer to stay somewhat grounded and sane and conscious, while feeling a little high.
To answer OP, If you want to quit, just quit. Stop hanging around with people you smoke with and get some new interests.
It's a lot easier than giving up cigarettes or alcohol.