I've often try to complete badges whenever I get lost trying to find something new to do. I used to think I could do everything the game has to offer but have finally acknowledged that is impossible to achieve. I've only been playing since June 2009 so it's been 9 years now since I started and have given up trying to do it all and just do what is fun for me.
One thing I started about a year and a half ago is start a YouTube channel where I put videos telling about various things I've been getting up to with the game. I've got over 100 videos up now. Maybe you might like to have a look at some of them and see if you get any ideas. As I said above, I often try to get badges when looking for something new and a lot of my videos begin with me trying for a badge, or series of badges and then things just evolve.
Whatever you end up doing - have fun and Happy Simming.
Here's the link to my channel.
https://www.youtube.com/channel/UCuW44b3uCMtCSaq4gwC8EZg