First, stable and normal cash flow or in accurate calculation as realistic capital to be used in making aggressive purchases, but it should also be remembered that mental health must be considered after making a purchase, it can indeed affect the buyer.
It actually starts before a purchase from many things like: how an investor manage his capital for investment and has reserved capital for other things; how that investor research about the market including the
psychology of market cycles..
If an investor used all capital for investment, it is similarly to a once and only bet in his life, so with this investment style, his psychology will be very weak and unstable with this wild market and high volatility.
If an investor did not do any research on the Market price history, Psychology of market cycle and how the market reacts in Fear and Greed with price, he will have very high chance of reacting in nearly same way of the majority as be panic and fearful when he needs to be greedy.
https://www.bitcoinmagazinepro.com/charts/bitcoin-fear-and-greed-index/Yes, consistency is more better than going aggressive but yet sometimes you go aggressive in order to meet up with your target of accumulation earlier than you bargain. Going aggressive when the price is falling is just a strategy to maximize profits and not to feel that we are losing because such opportunity may not present itself again in the future so by going more aggressive when the price is depreciating gives an edge of more accumulations and higher chances of making larger profits in the long run after the price must have skyrocket.
Spending your money aggressively for investment is not good, because all activitites in life are like trial, learn, adjust and do other trials. You can not be sure that what you are doing is good, accurate and will bring profit. Hence you need to have open gates for your later chances and trials. If you don't reserve your capital for future chances, you can lose all capital in one bad decision or in one blackwan event, then you will finish your investment journey unexpectedly.
It's impossible to find market bottoms and market ATHs, so going aggressively with both entry and exit is not good strategy.