If a trader can apply his strategy in the way you explained about trading psychology, he will continue to be profitable. I recently implemented a strategy that has made me profitable and greatly reduced the chances of losing money. An example of this is that I buy multiple coins at a time when the price subsequently decreases but a week later when the price recovers and a small profit is made, I sell most of the coins at that time. In some cases I have to sell at a small loss/profit because it is better to have a small profit than to have a fund portfolio in the long term. I think this could be a trading psychology because your profit will be small but in the long term the capital will not be tied up in the fund that you have allocated for short term trading
Being able to control your emotions and stick to your definite plan is the real help never to suffer great losses and remain able to be a profitable trader. It is disciplined to buy up a number of coins to diversify and sell when the least profit is obtained. In some cases it is worth to take the little loss, or even a small profit, as opposed to taking too much risk and being a late winner. It is the continued gradual controlled trading, like this that leads to long-term success as well as flexibility with your capital to find new opportunities. It is definitely a good illustration of a sound trading psychology being applied.
You got it right. To become more experienced in trading, you need to be brave in every case of profit and loss and always invest the amount of money that is not related to your daily needs. After buying coins, its value may decrease and it may remain in the portfolio for a long time which you cannot sell at a loss. Controlled trading means that you will avoid selling at a loss and continue buying regularly so that you can expect high returns by selling considering the market situation. In order to maintain the amount of patience and tolerance that should be maintained by diversifying the portfolio, you will have to continue the journey through the accumulation process in the long term.
I think that for long term success you should continue accumulation for the long term and as the size of the holding in the portfolio increases, you can keep it as short term trading or long term holdings according to your plan.