"Necessary" in the title is a conditional word. Each person will determine which of the proposed list he should try. The author sets himself the task of inspiring the reader.
1. Donate half of your salary to charity.
2. Never lie in a day.
3. Curtain the windows for a week and leave the house only at night.
4. Look at the ground from a balloon.
5. Swim in the ocean.
6. Give a friend a gift for no reason.
7. Pick up the snake.
8. Dance blindfolded.
9. Plant and care for the plant.
10. Try to catch fish with your bare hands.
11. Paint a picture.
12. Sing your favorite song in chorus with someone.
13. Keep a diary for a month.
14. Ask a stranger for help.
15. Make a pilgrimage.
16. Meet the dawn on the street, watch the city wake up.
17. Tell a story to the person with whom you speak different languages.
18. Ride a horse.
19. Do not say "I" throughout the day.
20. Speak to an audience of over 100 people.
21. Spend the day alone with yourself, turning off your phone and computer.
22. Read a book in one sitting.
23. Correspond with a friend by paper letters.
24. Take someone on a tour of their hometown.
25. Make a snowman.
26. Ignore your own birthday.
27. Visit Africa.
28. On a starry night, go boating or sit on the shore.
29. Spend the day with children trying to understand them.
30. A month to live in a hostel.
31. To respond to evil with good.
32. Feed the fish.
33. Practice holding your breath.
34. Walk on the ice without fear.
35. Learn a poem in a foreign language.
36. Give a hand-made thing.
37. One day to live without food and drink.
38. Freeze at a randomly selected moment and do not move for 20 seconds.
39. Milk the cow.
40. Look at something through a microscope.
41. Taking pictures while lying down.
42. Take a walk in the underground labyrinth.
43. Work for free (for example, in a monastery).
44. Walk along the rope bridge.
45. Go to the bathhouse.
46. Give your loved one a massage.
47. Try to write down everything that happened during the day.
48. Sculpt a figurine of yourself out of clay.
49. Dedicate a poem to your loved one.
50. Take part in a ceremony (for example, a tea room).
51. Adopt a homeless animal.
52. Delete from the phone book all numbers that you cannot call.
53. Hug a tree.
54. Clap your hands in mittens.
55. Sleep in a tent.
56. Make peace with your abuser.
57. See the northern lights.
58. Learn to ride a bike.
59. Ride the waves.
60. Conduct a chemical experiment.
61. Do exercises in the morning for a month.
62. Launch a kite.
63. Take care of the sick.
64. Look at the top of the skyscraper.
65. Don't look at the clock for the day.
66. Visit the desert.
67. Come up with a fairy tale.
68. Write a plan for the year and break it.
69. Learn to find at least a few constellations in the sky.
70. Climb a tree.
71. Get drunk from the spring.
72. Cook food over the fire.
73. Enter an abandoned house.
74. Hear live throat singing.
75. Learn the history of the native language.
76. Don't look in the mirror for a week.
77. Walk barefoot on the stones heated by the sun.
78. Do something good anonymously.
79. Pet an elephant.
80. Try to make your own shoes.
81. Take part in archaeological excavations.
82. Learn to write with both hands.
83. Cross the border on foot.
84. Dedicate a day to another person.
85. Remove garbage in a forest or park.
86. Douse yourself with cold water.
87. Climb onto the roof of your own house.
88. Try to draw a map of some area.
89. Learn to hold an apple on your head.
90. Lie on the water of a very salty reservoir.
91. Learn your family history.
92. Make repairs yourself.
93. Hand feed the horse.
94. Spend the day in the library reading room.
95. Smile at the sun.
96. Help a stranger.
97. Visit the factory.
98. Letting go of the hair.
99. Follow your own footsteps.
100. Think about God.