For teens, besides volunteering, how to increase Character values

Carl's guide as mentioned has a list of positive and negative behaviours which is better than anything i could have said.

Mainly I use setting the table, taking out trash, brushing teeth, writing in journal, jogging to clear mind, giving gifts (here take my junk), and helping fix bad relationships(I play in my recreated ts2 save file so there's plenty of people with enemies to work with). I also find during my rotational when I go back to sims they've made random dislikes acquaintances to work on too.