Hi,

It might've been just that you were unable to fall asleep maybe?
There is somewhat weird balance that exists in (most of?) wild techniques.
If your technique is too strong for either body or mind it might prevent you from falling asleep or slow it down?
If your technique is too light for either body or mind then it might result in falling asleep unconsciously.

The body/mind part is just there to mark that balance exists in all techniques
Mind ones like counting?
Body ones like lying uncomfortably to induce pain or just to fall asleep slower in hope to enter dream before losing consciousness?
etc.

I'd suggest reading up this stuff:
http://www.dreamviews.com/wake-initi...ail-wilds.html
http://www.dreamviews.com/wake-initi...ild-guide.html
http://www.dreamviews.com/induction-...cid-dream.html