Going for long walks in the woods is a bit of a gamble.
On the one hand, you might waste a day on wistfulness with nothing but sore feet and maybe damage to your clothing or a rash from careless contact with the wrong plant. On the other hand, you might meet a mysterious old woman. The former is far more common, but the latter, when it occurs, is important.
A mysterious old woman can cure what ails you, far better than whatever tinctures or old wives' tales a more ordinary sort of old woman might prescribe. As long as you follow their advice perfectly, no matter how stranger or seemingly inconsequential. Failure to do that can have...interesting...results.