Yes, the only strategy when trading is that, buy low then sell high in that reason you will earn but beware because there are times that
our stocks will not be sold while the price is getting lower, in this case try to be patient and wait for the time for the price to get high that is why
when involve in trading just trade the amount we feel its okey to loose so we will not get hurt when we fail. If you want try to read different strategies
in trading maybe you can be a good trader.