Currently, my personal experience is:
For the asset $BTC, I force myself to think and operate with at least half of my position in a 10-year dimension.
For assets like $BNB / $SOL / $USDC, the timeframe is 3-5 years. I used to consider $ETH for 5 years, but now I only see it as a short-term trading asset.
For other value coins with fundamentals and profit models, such as the recently favored $Kaito and $Virtual, the timeframe is 1-2 years, mainly focusing on whether their main narrative has the potential for long-term survival and whether it can generate momentum and become a leader in the market.
For meme coins, except for $DOGE and $PEPE, the maximum duration is basically 2 months.
In my view, investing is actually very counter-intuitive; most of the time, decision-making is a struggle against human instincts. It's certainly not as simple as the notion of “not going where the crowd is, being greedy when others are fearful, and being fearful when others are greedy.”
Understanding one’s own instincts and those of the majority, and being able to make decisions at critical junctures by saying “I predicted your prediction,” is sufficient; there’s no need to pursue perfection.
After all, if you can outperform most opponents in the trading market and accumulate a few successes, you will be a big winner.