Flickr / Don O'Brian
Unfortunately, all I have to do is look around me to see that it's time for a refresher.
And because good advice never goes out of style, here are 99 rules for men to live by:
1. Measure yourself only against your previous self.
2. Never cancel dinner plans with a woman by text message.
3. Ignore the boos. They usually come from the cheap seats.
4. You don't have to keep every secret, just the important ones.
5. If you're staying more than one night, unpack.
6. A suntan is not bought, it's earned.
7. Place-dropping is worse than-name dropping.
Pete Hottelet / Flickr
9. You don't have to like baseball, but you should understand the concept of what a pitcher's ERA means. Approach life similarly.
10. A glass of wine or two with lunch will not ruin your day.
11. Appreciate your parents. When they die, you become an orphan.
12. "Remember when" is the lowest form of conversation.
13. It's okay to forgive, as long as you don't forget.
14. Never make a scene
15. Buy a tuxedo before you are thirty. Stay that size.
Christopher Porter/Flickr
17. When giving a toast, short and sweet is always best.
18. If you are wittier than you are handsome, avoid loud clubs.
19. Know when to ignore the camera.
20. Never take an ex back. She tried to do better and is settling with you.
21. Invest in great luggage.
22. Always carry cash.
23. Suck it up every now and then, especially for your family.
24. Never be the last one in the pool.
25. Don't stare.
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27. Stand up to bullies. You'll only have to do it once
28. Admit it when you're wrong, and forgive yourself for your mistakes.
29. Take more pictures. With a camera.
30. If you offer to help, don't quit until the job is done.
31. Know at least one good joke.
32. There's always another level. Just be content knowing that you are still better off than most who have ever lived.
33. When you marry someone, remember you marry their entire family.
34. It's okay to go to the movies by yourself.
Bryan Rosengrant/Flickr
36. Yes, of course you have to buy her dinner.
37. Never ask the same question twice.
38. Be kind. Life is hard enough as it is.
39. Know your way around a kitchen.
40. Set Goals. Write them down.
41. Stop talking about where you went to college.
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43. It's okay to trade the possibility of your 80s and 90s for more guaranteed fun in your 20s and 30s.
44. Never park in front of a bar.
45. Play competitive sports for as long as you can.
46. Never date an ex of your friend.
47. If riding the bus doesn't incentivize you to improve your station in life, nothing will.
48. When the bartender asks, you should already know what you want to drink.
49. If you perspire, wear an undershirt.
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51. When people don't invite you to a party, you really shouldn't go. And sometimes even when you are invited, you shouldn't go.
52. People get tired of you being the funny, drunk guy.
53. When in doubt, always kiss the girl.
54. Tip more than you should.
55. Always buy good shoes, sheets, and tires.
56. Put your cell phone away. You probably use it too often and at the wrong moments.
57. Eating out alone can be magnificent. Find a place where you can sit at the bar.
Jeremy Stebens
59. Eat brunch with friends as often as possible.
60. Be a regular at more than one bar.
61. Value a handful of truly close friends over a hundred acquaintances.
62. It's better if old men cut your hair.
Luca Perini
64. No selfies. Aspire to experience photo-worthy moments in the company of a wonderful companion.
65. Don't split a check.
66. If you come from money, embrace it. We live in a world that rewards intelligence, creativity, and risk-taking.
67. When a bartender buys you a round, tip double.
68. The cliché is that having money is about not wasting time. But in reality, money is about facilitating spontaneity.
69. Be spontaneous.
70. Do not use an electric razor.
71. Desserts are for women. Order one and pretend you don't mind that she's eating yours.
72. One girlfriend at a time is probably enough.
Matt Sullivan/Reuters
74. Throw parties. But have someone else clean up the next day.
75. Buy expensive sunglasses.
76. Act like you've been there before.
77. You may only request one song from the DJ.
kacper Pempel/Reuters
79. When you admire the work of artists or writers, tell them. And spend money to acquire their work.
80. Your clothes do not match. They go together.
81. Staying angry is a waste of energy.
82. Revenge can be a good way of getting over anger.
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84. Always bring a bottle of something to the party.
85. Avoid that "last" whiskey. You've probably had enough.
86. Don't use the word "closure" or ever expect it in real life.
87. Drink outdoors. And during the day. And sometimes by yourself.
88. Don't linger in the doorway, in or out.
89. Date women outside your social set. You'll be surprised.
90. If it's got velvet ropes and lines, walk away unless you know someone.
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92. The New Yorker is not high-brow. Neither is The Economist.
93. No-one cares if you are offended, so stop it.
94. Hookers aren't cool, but remember, the free ones are a lot more expensive.
95. Don't ever say, "it is what it is."
REUTERS/Peter Andrews
97. Give up the dad bod. You're not Leonardo DiCaprio.
98. Remember: Rules are for the obedience of fools and the guidance of wise men.
99. You can get away with a lot more if you're the one buying the drinks.
WIll Fisher/Flickr
John LeFevre is the creator of @GSElevator on Twitter, and the author of a new book and New York Times Bestseller, Straight To Hell: True Tales of Deviance, Debauchery, And Billion-Dollar Deals.