Speculation: Run when it rises, cut losses when it falls, making a profit is luck, losing is accepting fate; speculation is just a gamble, relying on luck and trends to make money.
Investment: Good assets at good prices, hold for the long term, looking at it over a long time frame is always at the bottom.
How to differentiate between investment and speculation? Strictly speaking, in the crypto space, only BTC is considered an investment, everything else is speculation, which should be easy to remember.
However, many people confuse the two, for example, investing in memes and then blaming others when they lose.