Believe me, he can take care of himself. You do not have to support him. He will find his way , one way or another.
Now , you may need help to stand for yourself and deal with you need of control etc. Alanon is a good place to find this help.
See the phone book and call to find out a meeting close to you.
Alanon meetings, literature and the practice of the steps will help you to find serenity in the middle of the storm

Big Hugs