Stress isn't even the word haha. Biting issues!

I know I've been lucky with Harley, she could be a lot more destructive and a lot less focused (she seems to learn quickly usually) but her biting is just too much. 

It's always been an issue, but for a while she stopped whenever I gave her a toy to chew on, but now she's actually targeting peoples clothes, hands, feet, the couch pillows, the couch etc. She's even drawing blood now which is new. I've tried SOOO many techniques, but she just doesn't seem to be learning not to bite. I've even tried no chew sprays, but that doesn't work what-so-ever with her. 

I know it's 100% just excitement and too much energy, but I play with her constantly when she's awake, take her out for short walks, let her run in the garden, but then she just comes back in and bites and chews.

What techniques worked for your dog(s)? 

Have a read of this

http://staffy-bull-terrier.com/stop_your_staffy_puppy_biting

Yelping and ignoring worked for me

Yes the yelping high pitched worked for us too, keep at it the penny will drop

Any loud noise just makes her even more excited.  

A dog trainer that I know actually told me to smack her on the nose when she bites, couldn't believe a trainer would suggest something like that. 

I'll keep replacing myself with her toys and hope that soon enough she clicks that I'm not a giant chewtoy   

Thanks.