when I look over my hands at the end of a session, I'd say at least half of my overall losses are usually unecessary spews/bluffs/plays/floats that I shouldn't have done in the first place.
Join the club!!!
However i don't think it's the right move to take this out of your game altogether, playing like this helps your big hands getting more action then they should. What I'm working on right now is having a reason why I float or reraise with air. I ask myself can this guy fold a marginal hand (if he's bad that answer is hell no!!) , a decent hand or a good hand if he thinks he's beat, whats his image whats my image have I played with this guy before, does he think i'm a complete maniac. However redundant it may seem it helps keep away the thinking (which I often have) "Oh he must be bluffing lets three bet, oh he called well surely he can fold if I second barrel oh he raised me? Well I must be getting leveled I'm all in. Humm he had the nuts....