Littlefish,
My hobby lies in nature. I've said these words hundreds of times on PC, sorry!
But, for me, it's very true. I like to be as removed as possible from humanity, and just "be" with the plants, insects, animals, etc. The sky ~ watching clouds, trees flow in the wind, birds flying, stars and the moon at night. These things are absolutely necessary in my emotional, daily world. They are what gives me the motivation to live. No doubt about it!
In reality, I can't always take that walk and escape. So, I carry small memoirs with me. Little stones, leaves, and pine cones that I've found on walks. The get me through the moment.