I've been there.
I got lost hunting once over by Jackson Mont in 2005. First time there ,hiked in, in the dark with someone who hunts there regular.He needed help loading his Elk on his horse (the horse wanted nothing to do with it).I stayed behind to skin and pack the head (he was afraid the horse would blow if he waited).I told him I could find my way out.I lied, he left at about 10am. I hiked from about 10:30am till it got dark.I never could see out of the trees.
Just before it was compleatly dark I found somewhere to start a fire and stay for the nite,gathered wood and started a fire.I did get a little crazy(we won't talk about that).Every time I got cold, I put more wood on the fire.Fortunatly there was plenty of wood and I don't think it got colder then 30.So I didn't have it too bad.
As soon as it was light I got started again and within a couple of hours I could see a farm house about 5 miles out.So I headed for it With in 2 miles I found the road.Got picked up buy a couple of other hunters.I got back to camp about 8:30 and the guy I was there with was brushing his teeth.He said if I didn't show by noon he was going to call the Sherrif.
I learned that I really have a poor since of direction and poor judgment as to the carictor of people.I also now have a unlimited budget when it comes to survivel gear.I don't give people second chances if they are willing to leave me behind once they will do it again.Yes I told him I would be ok.The people I usualy do things like hunting and sleding would never leave someone behind, and shure as hell wouldn't bush their teeth if they lost someone, they wouldn't sleep till they found them.
I usualy don't wear my longjons and that day I did.I also used to leave my pack behind allot.I didn't that day and I'm verry glad I didn't.I also learnd those 99 cent space blankets suck and so do cheap wool pants.
SPEND THE MONEY YOUR WORTH IT!!
P.S. The head never made it back to camp.