The cycle of disbanding that keep casuals from doing content

[Tiggy]

And practical terms that means what exactly?

As people have mentioned a dozen times. Go out and make friends that can help and learn with you to get it done. Network. Get into linkshells with similarly minded players tackling similar content. Do not in any circumstances expect people to come to you. You must go and meet people, and above all try to get to know them a little. This is an MMO. You're personal success is largely contingent on the support network you build.