Yeah? So who cares what you lot think!? (snarl!)

;-D (just kidding)

Being grouchy is no asset for anyone, unless it's a deliberate acting technique for securing the part of a "crusty but benevolent" older character or an "old grouch" part in some silly TV sitcom...in which case it IS an asset!

On the other hand, mere positive thinking and outward posturing of positivity is no asset either, unless it is backed up by effective action, hard work, good judgement, an honest appraisal of oneself and reality, etc...

I mention this because my Dad was an absolute master of outwardly positive thinking and creating an "appearance" of personal success, etc...plus he did plenty of hard work, by the way (but didn't make such wise decisions)...to the point where he succeeded in convincing veritable legions of people that he was:

1. extremely successful! (he was not)

and

2. quite rich (not even close...)

They tended to become disillusioned with a year or two if they actually got directly involved with him in business and discovered the painful truth...but those who didn't do so remained fooled indefinitely. Our various relatives mostly still think he was rich! The truth of the matter was anything but that. He drove a Jaguar and a Mercedes, but he wasn't rich. The local newspaper did an obituary column for him in which they said that he had "made his fortune in...etc., etc."

What fortune???????? There was no friggin' fortune anywhere!

So, yes, positive thinking is great...but as Kat said, it's not ALL that is required in order to prosper. Good judgement helps too.