OK I kinda see what you are after, but skip the lentil thing. Go on a two week backpacking trip-a real backpacking trip, not staying in a campground. Just you and 30 lbs of gear. Wake up day after day in a damp sleeping bag in a cold tent with no where else to go. Discover your water purifier has frozen, the stove is out of fuel, and the mice ripped open your bag and took all the chocolate. Your boots and socks are wet and you try to dry them by a open fire and just succeed in burning them.
Thats just a typical NY hiking trip and believe me I have been in far worse situations in Alaska.
Every day I wake up in a warm dry bed I thank God. That will do much more for you're appreciation of life's comforts then a year of eating seeds.