Day trading for beginners.
The only reason to buy a stock is to sell it for a reasonable profit. In trading a lower market price is an opportunity for buying. Portfolio should rise during falling markets because more stock prices are entering an acceptable "lower-price" buying zone. The objective of the exercise is to have cash available for buying during every downturn. Buying rules should be somewhat complex so you don't just go out and buy everything.
Selling rules should be simple. Ten per cent is a reasonable profit level; even less is fine if buying opportunities are plentiful. No investor trader, speculator, whatever should ever allow a reasonable profit to go unrealized. Buy slowly and take profits as quickly as you can.
Without these natural changes, there would be no hope of gain, no chance of buying low and selling higher. No risk, no profits, and no excitement. Think and act and live like the successful person you know you truly are.
Take care and all the best.