Am new here, and with my little knowledge am sure a good trader should have all the patience he/she can get.
Patience is needed, you have to be patience in terms of lost, trading is not always about benefits at all times, you will always run into lost a lot and that might trigger you to want to back out, but with patience you can scale through.
This is a low-key character that every trader and investor needs to have. You're right that patience is needed because it's all about proper timing for the trades that we do so we can profit. Without patience, you're bound to lose even us, holders, we're all patient and that's what we've learned for so long that it's an important attribute that someone needs to have in this market.
Another thing is discipline, by disciplining yourself you will have the enablement to purse a goal you have set, and it will help you to be forced at all times.
Trading is a lose and gain thing if you aren't making profit you have to quit.
It comes up with discipline and I think that when you're patient, you're also disciplined. So it comes with a package after learning one and the other.