First of all, explain what you meant as psychological trading.
Is it a type in which a trader will trade without having any bases of analysis? If that is it, it means the person is just gambling. Or does it mean a trader will not trade at all until the price of bitcoin has fallen so significantly? That is a good type of trading if that is what you mean.
But this would be good only for swing traders and holders. As for scalpers and day traders, technical analysis is very important.
When you mentioned gambling it made me feel this way;
Do you ever know the outcome of a trade from the beginning? The market is a space of random variables and that's a gambling feature. The good thing in trading is we are able to put the variables to our favour with some sort of trading skills yet we don't win all the time.
Have you closed a winning trade at lose? That's because you tried escaping this feature of the market but the right psychology would make known all these facts to your thoughts about the market. Without good psychological behaviors it's difficult to remain disciplined (follow your risk management plan) in the market.
So in as much as you are very good with your TA+FA I think it's also necessary to maintain good behaviors in the market.
On the moment that you would really be boggling up your mind on how this market behaves or works on which same as you had mentioned above that when it comes to volatility then its true that there's no way
that we could really be able to predict on where it would be going and this is why it would really be the reason for you to make out those predictions and guesses on where it would really be going. It would really be just that becoming a gamble on the moment that you wont really be applying any analysis into it. If you are really just that placing up your position without any basis or analysis been applied then you are just basically doing 100% gambling.Whereas, into those traders or people who do make having those kind of technical and fundamental analysis on which they are really that trying out to lessening up the risks on losing such trade.
Somehow there would really no assurance that you would really be able to make those profitable trades due to unpredictability but it would really be always best that you should really be applying
into those things on which really needs to be applied if you are really that serious on trying out to make some profit within this market.