Whats the main aspect(s) of addiction in a persons natal chart?

In studying a natal chart what is the biggest or main aspect(s) that point towards having an addictive personality? I'm currently studying an adult natal chart with Neptune square the Moon and am also studying a child chart that has the same aspect. Any others I should look for?

Thanks Alex....prayer sent your way,hope everything works out.

Neptune is the planet that rules addictions. It also rules artistic ability, so this is an energy that can go either way;
transmuted into pure expression of self as in artistic creativity, or taken to the base emotions of pleasure and delusion.

House placement (6th or 12th) and/or squares to Neptune show what difficulties may be faced.

The moon square neptune often clouds judgement and gives over to emotional reactions to situations, the native may not always see the situation clearly. They need to learn objectivity, to stand aside and look at the situation as if from a 3rd party viewpoint.

I'd like to help you, but I can't help but believe that genetics and environment play the largest part in manifesting addictions. Sad to say, but my dad's whole side of the family are alcoholics and they come from every sign there is!