Nessmuk said:Take the time to write your thoughts
an inexpensive digital voice recorder makes journaling all the more easy and rewarding. Not only is it much easier than pen and paper (meaning you will take more notes), you get the benefit of listening to the intonation in your voice under different circumstances. I have recorded sounds of babbling brooks and waterfalls and frogs and loons and deer snorts and swatting deer flies.
Unlike a regular size camera, the small one is always ready and I capture many more photos than I ever did fumbling around with my larger camera.
When you get home you can pour over the photos, along with your journal. Make a package out of them. The digital time stamp gives you a chronology of your experience. You've brought the trip home with you and can use it to plan the next one. The anticipation may help ease your depression - daydream a little.
I like to keep a journal also as not only can I relive the hike as I write but I can go back again and again. Photo's - as the saying goes, "A picture is worth..."
Now as for the voice recorder, my son (~ 10 yr. old at the time) did that for several hikes and we had a great time listening over and over to some of his interview style questions, his descriptions and 'priceless' - his swallowing a fly