Sycamore, IL, USA
You are all heart, gal. I think what I'm reading is that you were involved in some things you weren't exactly proud of with your friends, then the accident caused you to rethink how you're spending your gift of life. Now you want to change for the better and your friends don't or wouldn't understand. When they ask you to join in those past activities, just say, "Sorry, my accident has caused me to see things like I never have before and it's changed my ways." Smile when you say it, and expect that they may make fun of you. That's what happended to Jesus and multitudes of others. It' okay, don't let fear stop you from improving yourself. There'll be more friends in the future that you have more in commmon with. Serenity has a good answer, too. If you can't face them and tell them, just shuck the need to say anything about it, but don't let it stop you from following your heart. God puts these things in our lives for a reason.
Users and alcoholics have to make big changes when they clean up their lives, but I've never heard one say it's not worth it.