Knowing that, pursuing happiness is akin to pursuing highs: a futile endeavor.
You can only be comfortable. Financial comfort, emotional comfort, physical comfort. However, comfort makes you weak. Avoid it.
The rest is bullshit. Consumerism & earth saving crap have NOTHING to do with happiness. Just brainwashing. Avoid that too.
However, considering your field of interest and how you formulated the question, I venture to guess that is the main substance you work with. You came here not looking for answers, but just for affirmations of the things you are already thinking.