Sounds pretty straight forward man.
We've all done some silly things.
Continue on with that plant-based diet (with fruits & veg as a focus), get out in the sun (once you've detoxed that drug from your system), get good sleep and exercise....and you'll look great man. No problems.
Maybe share your dad's visions with your brother, see if it has an impact on him.
◇ Much love ◇
"Within your heart is a lotus, and within this lotus is a diamond. This diamond is the source of creation, and in all the creation, there is only one lotus."
"Only from the Heart can you touch the sky." ~ Rumi