You decide that you cannot trust the berries, no matter how hungry you are.
As you continue through the forest, your walk turns into a stagger, which turns into a slow, helpless crawl.
A few hours rest wouldn't hurt...
The hours turn into days, the days into weeks, the weeks into months, the months into years.
One day, many years later, some children playing in these woods find your emaciated body, frozen in the same position as the day which you died.
The memory will haunt them forever.