Activity

leads to stasis, unhappiness

And for that matter: excessive load of irrelevant cognitive work, like overcoming ambition goal for the sake of rationalizations of rationalizations of rationalizations, paying time and sacrificing attention to own emotions, e.g. very actual reality of being here and now on regular basis -- that's what actually could lead to unhappiness. There's nothing bad in death. But that an existential disaster -- to not live.