Well, having a beer with friends is pretty normal activity. Its getting drunk that puts yourself at risk. What activities were you involved in at high school or with your friends from then? List some interests you have that dont involve party behavior. Could be anything. You're wanting social activites so narrow the list down to those that involve other people. Things like walking can be done in a group or alone, bowling is social, reading not so much unless its a book club. Laundry and cleaning the house arent really social unless you do it with someone, then it can be. But they dont all have to involve partying is what Im geting at.

Try and get a little of a lot of different things if you can. You'll find what you like best. Maybe partying is fun but believe me, you dont want to overdo it.