If you are a Wikipedia-addict-in-recovery I can understand you saying that, but other than that, I don't see how it could ruin your life all by itself. If you are a Wikipedia-addict, black-holing from your network might be a good 1st, er, post-first-step (the "first step" is admitting you are powerless over Wikipedia...).
If you mean Wikipedia's content about you ruined your life:
If you are a living person, Wikipedia's policies, editors, and overlords generally do a good job of keeping out unverifiable gossip that might ruin your life.
Someone infamous might say "Wikipedia ruined my life" but their life was already ruined without Wikipedia.