Individuals can't really do that, unless they're willing to pay the cost of being cut off from the world. Hippies communes have few luxuries. Plus, these groups aren't very stable, because of that pesky interpersonal conflict and freedom to leave.
What you can do is optimize your group of friends, which basically everyone already does. In ancient times people couldn't guess where to move to to find good friends, except if a place got a reputation as a hotspot for a particular group which was unpopular elsewhere. (You're a gay small town boy? Go to LA.) Now that the Internet exists, people can make friends and then move to be near them, though the improvement is rarely worth the cost of moving.
Globally speaking:
Magically creating this utopia would fail, because of conflicts over scarce resources. Taking scarcity out of the equation, you could still get huge fights and very unstable communities.
Getting from here to this utopia has been tried. Usually there's some more or less dubious theory that points to a group of bad guys and jumps to the conclusion that removing the bad guys will create utopia. Various ideologies are distinguished by choice of bad guys and method of removal. (People currently in power are a popular choice, but you can always default to Jews.) While this method has produced poor results, I would be hard-pressed to think of a better one.
Moderate politicians could attempt to move incrementally along their preferred path to utopia. The optimistic view is that they wildly disagree on how to create utopia (e.g. will redistribution or trickle-down economics best solve hunger?) and are thus working at cross-purposes.
Getting from here to this utopia has been tried. Usually there's some more or less dubious theory that points to a group of bad guys and jumps to the conclusion that removing the bad guys will create utopia. Various ideologies are distinguished by choice of bad guys and method of removal. (People currently in power are a popular choice, but you can always default to Jews.) While this method has produced poor results, I would be hard-pressed to think of a better one.
I kind of wish we had signatures here so I could put this in mine.
Assume for the time being that it will forever remain beyond the scope of science to change Human Nature. AGI is also impossible, as is Nanotech, BioImmortality, and those things.
Douglas Adams mice finished their human experiment, giving to you, personally, the job of redesigning earth, and specially human society, according to your wildest utopian dreams, but you can't change the unchangeables above.
You can play with architecture, engineering, gender ratio, clothing, money, science grants, governments, feeding rituals, family constitution, the constitution itself, education, etc... Just don't forget if you slide something too far away from what our evolved brains were designed to accept, things may slide back, or instability and catastrophe may ensue.
Finally, if you are not the kind of utilitarian that assigns exactly the same amount of importance to your desires, and to that of others, I want you to create this Utopia for yourself, and your values, not everyone.
The point of this exercise is: The vast majority of folk not related to this community that I know, when asked about an ideal world, will not change human nature, or animal suffering, or things like that, they'll think about changing whatever the newspaper editors have been writing about last few weeks. I am wondering if there is symmetry here, and folks from this community here do not spend that much time thinking about those kinds of change which don't rely on transformative technologies. It is just an intuition pump, a gedankenexperiment if you will. Force your brain to face this counterfactual reality, and make the best world you can given those constraints. Maybe, if sufficiently many post here, the results might clarify something about CEV, or the sociology of LessWrongers...