HODL originated from a 2013 Bitcoin forum post where a user misspelled "hold" while declaring they would not sell despite a price crash. It has since become a rallying cry for long-term cryptocurrency holding.
HODL philosophy: Believe in long-term value appreciation, resist urge to sell during downturns, ignore short-term volatility, and maintain conviction in the technology.
HODL vs Trading: HODLing suits those who believe in long-term growth, reduces stress and emotional decisions, avoids trading fees and tax events, but may miss profit-taking opportunities.
HODL has been backronymed to "Hold On for Dear Life," though this was not the original meaning.