Depends on the kind of game. E.g. multiplayer games, especially with persistence, are just very addictive, so if you know that you are vulnerable to those addiction triggers, it's best to abstain completely. That's of course only useful for avoiding future addictions, and doesn't really help with an ongoing addiction, which are hard to control, but withdrawal should be mild, so going cold turkey (uninstall, sell/delete account(s) and perhaps the hardware) should be viable. Oh, and it's not particularly nice to people, but if it's game that's only played within a community, you could also grief / troll / insult / cheat for a day or so to get permabanned / ejected from the community and burn your name.