Some personal highlights from 100 Tips For A Better Life:

• Reward yourself after completing challenges, even badly.
• Cultivate a reputation for being dependable. Good reputations are valuable because they’re rare (easily destroyed and hard to rebuild). You don’t have to brew the most amazing coffee if your customers know the coffee will always be hot.
• How you spend every day is how you spend your life.
• Selfish people should listen to advice to be more selfless, selfless people should listen to advice to be more selfish. This applies to many things. Whenever you receive advice, consider its opposite as well. You might be filtering out the advice you need most.
• Defining yourself by your suffering is an effective way to keep suffering forever (ex. incels, trauma).
• To start defining your problems, say (out loud) “everything in my life is completely fine.” Notice what objections arise.
• If other people having it worse than you means you can’t be sad, then other people having it better than you would mean you can’t be happy. Feel what you feel.