Time spent in a natural setting, a park, a forest trail, even a well-planted garden, is consistently associated with improved mood and reduced markers of stress, an effect that appears to hold up across a wide range of settings and does not require any particularly wild or remote location to occur.
Part of the effect on outlook specifically seems to come from scale and rhythm: nature operates on cycles considerably longer and steadier than the urgent, compressed pace of daily digital life, and spending time within that slower rhythm seems to help recalibrate a person's own sense of pace and perspective.
Regular time outdoors is increasingly recommended as a practical, low-cost component of maintaining a hopeful outlook, not as a replacement for addressing genuine difficulties directly, but as a reliable way to periodically restore the calmer, steadier perspective that sustained hope generally seems to depend on. None of it needs to be dramatic in order to genuinely count.