I made a significant mistake by not investing in Facebook when I had the chance, which taught me to recognize exceptional founders without overanalyzing.

I made the mistake of comparing my startup to competitors who had already raised money, which led to unrealistic expectations about my own fundraising efforts.

I initially hesitated to hire others for my company, fearing they would disrupt my vision, but once I did, I realized it was a mistake to wait so long.

The biggest mistake is being stingy with equity, which can lead to co-founders leaving when things get tough.

Bad advice from well-known investors can mislead entrepreneurs; it's better to admit uncertainty and direct them to someone more knowledgeable than to provide incorrect guidance.

After getting into Y Combinator, we made early-stage mistakes by hiring without proper culture fit vetting and dreaming too big without focusing on execution.

Founders often ignore the advice of YC Partners about mistakes they are about to make, and they come back later wishing they had listened.

I made mistakes in the fundraising process, including not meeting enough investors and assuming a deal was done before it actually was.

I wish I could tell my younger self not to let intuition be overridden by experience when hiring. Early on, I relied on my gut feeling, but later, I found myself substituting intuition with others' judgments, which can lead to poor decisions.