Habituation:

• Dostoevsky defined man as the creature that can get accustomed to anything. In The Function of Discontent, neurobiologist Indira M. Raman explains the brain chemistry of habituation. The is a mechanistic biochemical explanation of hedonic adaptation, eg most rich people can never have enough money. Similar adaptation allows us to tolerate adversity, to reach a new normal after tragedy.
• The take home point of the article is that a little displeasure resets the desensitized brain, and allows for happiness. Or put more eloquently:
“That includes the good and the bad, pleasant and unpleasant. Because the brain grades on a curve, endlessly comparing the present with what came just before, the secret to happiness may be unhappiness.”

Eggs:

• Yes we should all eat eggs every day. And we are lucky to have them. City of Thieves is a gripping novel about late WW2 Russia during the Siege of Leningrad. The story takes a 17yo Jewish man and slightly older Cossack soldier on a journey to procure a dozen eggs for a Russian general. With all of the TV shows, movies and news stories showing Russia in a not so favorable light, this book is refreshing.                                                             
•  Thanks Tej Dhindsa for the recommendation.

Micronutrients:

• Most multivitamins have the wrong amounts of everything. But the modern (especially American) diet is deficient in several important vitamins and minerals. A solid multivitamin to be taken every few days is the primal blueprint version. This is the only multivitamin I ever take. 

Fifty:

• Dan John invented many of these “challenges.” He is a strength coach with old school, classic wisdom recommendations such as “eat like an adult,” “surgery is nature’s way of telling us to slow down,” “there are two keys to success. One is to show up. The other is to keep going. Most people don’t keep going.”
• The 50 squat challenge is simply performing 50 consecutive squats. For many people at first these would be air squats. This is best done in a room with no coworkers or other people who can creatively mock you. Work your way up to 50 in a row. Once you can do 50 air squats, grab something that weighs 5 or 10 pounds and try that. Work up to a bar on your back with some weights. Prepare to have an abnormal gait the next day. 

Quote:
The strangest and most fantastic fact about negative emotions is that people actually worship them. 
-PD Ouspensky