Your brother would want you to carry on and be at your best
Drinking and drugs lower your faculties, in exchange for a temporary numbing or euphoria
The only way to live your best life is that your faculties are super bright. That means making choices to keep yourself as healthy and fresh as possible.
Sounds boring, the good habits you make have longterm benefits but cost you the “now” euphoric satisfaction / pleasure sacrifices
The bad habits you make give you that “now” pleasure and euphoria at the cost of your longterm benefits