What I found is, really, you always have to begin by nailing what is true about you, because something that works very well for someone else might not work for you at all.
Gretchen RubinThe absence of feeling bad isn't enough to make you happy; you must strive to find sources of feeling good
Gretchen RubinHappiness can seem like an abstract, transcendent notion, but in fact, I found that getting enough sleep (very important!!), getting exercise, not letting myself get too hungry, not letting myself get too cold (I'm a person who is always cold), made a big difference. Partly because I felt happier, partly because feeling physically comfortable makes it easier to keep other difficult happiness-boosting resolutions like biting my tongue.
Gretchen Rubin