For instance, I'm currently working towards owning more Blueprints (otherwise known as recipes in most MMOs) in order to increase my ISK revenue with manufacturing. Profitable blueprints are incredibly expensive, especially for a newbie. So to get the ISK required I mine. Mining in EVE is INCREDIBLY dull. Yet, despite this, i find myself enjoying the activity, every mineral sell means I am better enabled to buy blueprints. So despite working on a normally incredibly boring activity, I feel great as I watch my ISK rise steadily towards fulfilling my goal.
What about you? Have you found a normally dull activity in a MMO that just feels satisfying when your using it to work towards a personal goal?