It's hard to not be greedy, but it pays.
I always have the rule of 2x up stop and 1x stop loss (I'll buy eth on 200$, stop-loss 190, take profits at 220$).
It is great because there are many people who might look for higher profits instead of short profit because sometimes the market makes them greedy. In short term, we should not be greedy because long-term holders will always get a huge profit.