My father caught my smoking weed at the back of the house at 16 after I had finished a shift at 0300 glass collecting in a local nightclub. He looked pissed and said we'll talk in the morning. The next morning he sat me down and said he smoked weed until I was three years old.
His advice was.
"smoking weed is fun and can help you relax but you must always remember that there's more to life and weed may stop you from seeing that, stop you from doing the important things in life, so don't let it become your entire personality."