If your arowana makes you happy then that in itself will change your luck. A postitve attitude gives you different choices that are more satifying to you. Changes your decisions to a better what you truly desire inside without thinking. Quantum Physic's.....the law of "Attraction".....If you send out negative energy, you therefore attract it.....vis versa as well. Anyone read Dr. Emaro Muroto's book? "The Hidden Messages in Water"......awesome book that is fact and has to do with the molecular formations in water before and after certain thought's and words are "thought", "said" and "labeled" onto a glass of water....or lake, etc. Pretty interesting stuff considering the fact of a matter that you and also your fishtank are water.
INTERESTING STUFF, JUST TAKES A MINUTE TO CHECK OUT
HERES A LINK IF INTERESTED, FACTUAL EVIDENCE NOT FICTION
http://www.life-enthusiast.com/twilight/research_emoto.htm