To delay gratification is in my belief; to forego consumption today for greater prosperity tomorrow or better put, delay today's enjoyment for tomorrows benefit. The benefactors who stick to their strategy, have more consistent performance over time. By finding ways to embolden ones own discipline by either looking away, or by holding your long throat, one can use similar tactics to do the same thing as an investor. Think out a plan. Write it down. Set up automatic deposit or dividend reinvestment plans.
Does it therefore mean that the outcome of an investment can be determined in advance when we delay enjoyment/gratification?
Actually this thing has two different answers because in some cases it might give a positive outcome when your investment is something like bitcoin which has been giving positive returns since ever but what if your investment is something like LUNA ,you waited for ever to sell it at a price of $150, see what happened with their wait? All of them had to sell their LUNA for peanuts altogether. So this can't be said to be true in all the scenarios.