Step-by-step explanation:
1st if you think you going to a place where you can be in situation where no one can help so you shouldn't go
2nd even somehow you reached these place you should try to make a shelter.
3rd use your hand warmer.
4th don't loose hope and have a positive thinking about yourself
5th if your hungry so be like bear Grylls eat anything that safe for your health.
6th at last if you find a helicopter so try to burn wood and make smoke as much as possible.
hope this helps you
have a great day