Getting back on topic, my favorite way to spend my Happiness Points USED to be steel bladder, hardly hungry etc. etc. I wanted my legacy Sims to just focus on their LTW and raising generations, not having to go pee, eat or bathe. What was missing was Observant. So I switched to Observant with a different legacy as my first choice and it did indeed help me find a mate the second day of play. At this point, since I'm involved in a challenge, I needed to travel a lot. First choice was Prepared Traveler. It didn't matter if I could easily find personality traits but it quickly became necessary to have No Bills Ever. My third focus was getting that Collector! Without that everything went at half speed and I spent all my time trying to find things. My LTW was the movie composer one and my traits were virtuoso, green thumb, klepto, bookworm, and I can't remember the other one. I basically chose traits that could help me make money fast. Klepto was the most valuable one for getting a lot of money right at the start so I could buy into businesses, get my Carter's and start traveling. I used my virtuoso talents everywhere I went to play my guitar so quickly achieved my LTW which finally gave me enough points to buy that Collector! Between the klepto and guitar playing for tips and making Supernovium, I have enough to now really focus on achieving the end of that challenge.
If I ever start a new legacy, and I know I will, I'll start with Observant, then Multi-tasking and Opportunistic. These should get that legacy rolling along quite nicely.