I study Italian, Japanese, train at my MMA gym several few days a week, try to work out as much as possible and get better at guitar. Since RS doesnt help with any of these goals, I try to play it as little as possible, and as efficiently as possible when I do play. Even if an evening of playing RS is more enjoyable than an evening of memorizing kanji... long-term the latter will bring me more happiness you could say. Kinda like grinding real life.