Admit that you have a problem - even if only to yourself.
Even if all you can admit is that what you do is not "normal", that in itself is a huge achievement
Tell someone - start off by telling someone you trust.
I found that telling a friend was the best place to start
Find a support group (if there is one) in your area.
I have found the support group I attend to be great, even if it did take me 6 months before I plucked up enough courage to
Go to your doctor, they are there to help look after
you medically (I know how scary that can be)
Don't be ashamed and embarrassed - there is nothing
to be ashamed and embarrassed about (I still have a lot of work to do on this one)
Find a counsellor, preferably someone with expertise
in the area of eating disorders
Try not to push your friends away - even if they do
not know about the eating disorder just knowing that they are there is nice
You deserve more than the eating disorder is giving
you - you deserve to go out and enjoy life