Post-mortems of bad investments reveal the cause is never a calculation error but always a psychological bias or emotional trap. Sequoia catalogs ~40 of these, including failing to separate the emotional 'thrill of the chase' from the clinical, objective assessment required for sound decision-making.

Stop viewing saving as deferred consumption and start seeing it as an active purchase. The product you are buying is independence—the freedom to wake up and control your own time and decisions. This mental shift frames saving as an empowering act of acquiring your most valuable asset, not as a sacrifice.

Every investment decision feels uniquely difficult in the present moment due to prevailing uncertainties. This mental model reminds investors that what seems obvious in hindsight (like buying in 2009) was fraught with risk at the time, helping to counter behavioral biases and the illusion of past clarity.

To avoid emotional, performance-chasing mistakes, write down your selling criteria in advance and intentionally exclude recent performance from the list. This forces a focus on more rational reasons, such as a broken investment thesis, manager changes, excessive fees, or shifting personal goals, thereby preventing reactionary decisions based on market noise.

Viewing saving as 'delayed gratification' is emotionally taxing. Instead, frame it as an immediate transaction: you are purchasing independence. Each dollar saved provides an instant psychological return in the form of increased security and control over your own future, shifting the act from one of sacrifice to one of empowerment.

View objections not as personal attacks but as impersonal feedback, like bowling pins left standing. They reveal flaws in your approach's angle or force. This shift allows you to analyze the situation objectively, adjust your strategy, and try again with a different approach rather than becoming emotionally derailed.

To combat the emotional burden of binary sell-or-hold decisions, use the "Go Havsies" method. Instead of selling a full position, sell half. This simple algorithm diversifies potential outcomes—you benefit if it rises and are protected if it falls—which significantly reduces the psychological pain of regret from making the "wrong" choice.

People exhibit "Solomon's paradox": they are wiser when solving others' problems than their own. To overcome this, view your challenges through a third-person lens. Mentally frame the issue as if you were advising a friend—or even refer to yourself by name—to gain dispassionate clarity.

While having a disciplined rule like reviewing a stock after 24 months is useful, it should be subordinate to a more critical rule: sell immediately if the fundamental investment thesis breaks. This flexibility prevents holding onto a losing position simply to adhere to a predefined timeline.