I've often had half-finished LW post ideas and crossed them off for a number of reasons, mostly they were too rough or undeveloped and I didn't feel expert enough. Other people might worry their post would be judged harshly, or feel overwhelmed, or worried about topicality, or they just want some community input before adding it.
So: this is a special sort of open thread. Please post your unfinished ideas and sketches for LW posts here as comments, if you would like constructive critique, assistance and checking from people with more expertise, etc. Just pile them in without worrying too much. Ideas can be as short as a single sentence or as long as a finished post. Both subject and presentation are on topic in replies. Bad ideas should be mined for whatever good can be found in them. Good ideas should be poked with challenges to make them stronger. No being nasty!
I disagree with much of this. Not sure what 'reasonable shape' means, but I'm not above ignoring physical fitness in the pursuit of more lofty goals. Same with smoking - while I'll grant that there are more efficient ways to get the benefits of smoking, for an established smoker-turned-rationalist it might not be worth the time and effort to quit. And I'm also not sure what you mean by 'positive psychology'.
Just some examples. It might be that smoking is not as bad as its currently presented. Optimizing lifestyle for higher chances of survival seams reasonable to me, but might not be everyones choice. Want i do not find usefull in any instance are grumpy rationalists that scorn on the whole world. Do you agree with the importance of 'knowledge about the real world'?
Regarding positive psychology. Look um Daniel Gilbert and Martin Seligman. Both gave nice talks on Ted.com and have something to say about happiness.