Personally i enjoy this topic;
In the Bible, proverbs talks about this in
Proverbs 13:20 "Keep company with the wise and you will become wise. If you make friends with stupid people, you will be ruined".
Peer pressure can be tackled by making the right friends, reading your bible always as a Christian, or if you are already friends with people trying to involve you in ungodly things try talking to them to change their ways if the don't listen cut them off.