patience is the key to successfull trading.
Example:
I have $10,000 I want to invest in XYZ corp. I never buy all at once so I dollar cost average in over a six month period usually starting after a selloff.
So 10,000/6 = 1,666 roughly. I would buy once a month for six straight months. Then I would wait a year so I am taxed at long term capital gains. If I still like the company by that time I can start trading around my core possition and build shares using the wash sale rule to my advantage by keeping my trades within the trading window.