I am for the basic principles that dot mentions (mutual aid, free association, direct action). These are critical to how I at least want to live my life (I'm human and I fuck up... a lot), and are why I think anarchism as a lived practice is more than teenage rebellion (nothing wrong with teenage rebellion, but...)
Over the years I have come to see anarchism as much more of a negative project, by which I mean that I see my anarchism as a tool or a weapon for attacking the parts of the world and pieces of my life that I hate (I am trying to think of how to concisely define those in counter point to the three principles I mentioned above, but the closest I can get is capitalism, forced relations and mediated life, but I think there is a better way... halp!)
I'm often wary of anarchists who talk about prefigurative politics or who focus on the "after the revolution" side of things because we aren't there yet, and we don't know what that looks like. Certainly I have ways I prefer relating to others, and to the best of my ability I structure my life in conjunction with that, but I think trying to come up with a positive vision of the future (whether we are talking about feral bands of post-linguistic hunter-gatherers, or fully automated luxury gay space communism), while perhaps appealing, and certainly something that not-anarchists are always demanding, is also limiting, and I prefer to keep all the potential options on the table.
Also though, because I love Alexander Berkman, here is what he had to say about this (taken from the first issue of his newspaper The Blast):
"-Do you mean to destroy?
-Do you mean to build?
-These are the questions we have been asked from many quarters, by inquirers sympathetic and otherwise.
-our reply is frank and bold:
-We mean both: to destroy and to build.
-For, socially speaking, Destruction is the beginning of Construction.
Superficial minds speak sneeringly of destruction. O it is easy to destroy- they say- but to build. to build, that's the important work. Its nonsense. No structure, social or otherwise, can endure if built on a foundation of lies. Before the garden can bloom, the weeds must be uprooted. Nothing is therefore more important than to destroy. Nothing more necessary and difficult
Take a man with an open mind, and you will have no great trouble in convincing him of the false-hood and rottenness of our social structure. But when one is filled with superstition an prejudice, your strongest arguments will knock in vain against the barred doors of his bigotry an ignorance. For thousand-year-old superstition and tradition is stronger than truth and logic.
To destroy the Old and the False is the most vital work. We emphasize it: to blast the bulwarks of slavery and oppression is of primal necessity. It is the beginning of really lasting construction
Thus will THE BLAST be destructive
And THE BLAST will be constructive.
Too long have we been patient under the whip of brutality and degradation. Too long have we conformed to the Dominant, with an ineffective fist hidden in our pocket. Too long have we vented our depth of misery by endless discussion of the distant future. Too long have we been exhausting our efforts and energy by splitting hairs with each other.
It's time to act
The time to act is NOW!
The breath of discontent is heavy upon this wide land. It permeates mill and mine, field and factory. Blind rebellion stalks upon highway and byway. To fire it with the spark of Hope, to kindle it with the light of Vision, and turn pale discontent into conscious social action - that is the crying problem of the hour. It is the great work calling to be done.
To work, then, and blasted be every obstacle in way of the Regeneration."