What are some examples of when emotions mess up your trades?
There are a lot of them. My own experience is when I should've sold my shitcoins when it was gaining more than 30% in one day but I waited for it to spike more but then it dropped. And then another one is when I think that altcoins that are priced 1 satoshi is easy to make money but I always get stuck in the hype and I bought it in 2-4 sats but I never did check its total supply.
Well, you cant blame yourself for this, most people too are victims of this circumstances including me, we tend not to sell our coins when need be, waiting for a spike which is also not a bad idea, it depends on the angle at which you take the market but from your own angle.
It seems you took it from trading angle and that is why you could even invest in shitcoins which you ought to have removed before it even got to 30%, if it was a good coin that has the tendency of spiking high to 1500%, I dont think missing that opportunity should make one regret because it must surely come again and surpass that.