“It is like the seed put in the soil – the more one sows, the greater the harvest.” Orison Swett Marden
It is fairly simple wisdom that if you get more at bats, you will get more hits.
The more times you ask for the business, the more business you will do.
The more opportunities you generate for yourself, the more success you will achieve.
Beethoven had the same rate of success as the average composer of his era, he produced many times more work so produced more memorable works than his forgotten peers. Same applies to Mozart.
Do more upfront activity and you will have more come out of your pipeline. This applies to sales calls or asking for volunteers for your charity or free throws practiced (just ask Larry Bird).
The greats in all fields became that way because they did more work than others and let nature and probability do the rest.
Do more, be more.