The 'Good' trait and others can be used to your advantage.
Make a support character or 'buffer' if you will, who has Good, Great Kisser, Good Sense of Humor, and Charismatic traits.
Have that character as your main's spouse or lover and when you need a mood boost, just have them 'Brighten Day', kiss you, tell a few jokes (Hilarious conversation moodlet), Gossip to you and compliment you.
Although it is absurdly easy to keep your mood maxed in Sims 3, it may make it easier to play a really difficult character. A difficult character would be Grumpy, Ambitious, Loner, Unlucky and Stupid. Might be a nice challenge for someone.
Better strategy allows you to take down the raid bosses.