Lyric discussion by Idrathernotthanks 

Cover art for Happiness lyrics by Grant Lee Buffalo

While Grant-Lee Phillips's writing certainly leaves plenty of room for individual interpretation, he's also direct enough that lines such as:

"Nevermind the words that came Out of my mouth when all that I could feel was pain The difference in the two of us Comes down to the way You rise over things I just put down"

In the context of the rest of the song seem to indicate he might have either lost or thought he was losing a friendship or relationship due to suffering an episode of depression (most likely a friendship as he is still married to the same woman.)

See his comments on his latest album and lyrics: https://sinceileftyoublog.tumblr.com/post/686586294881697792/grant-lee-phillips-interview-a-great-deal-of

My Interpretation
Positive
Subjective
Sadness
Friendship
Relationship
Depression
Interpretation
Introspection