> Everyday I'm holding onto the shares is the same as if I made the decision to buy that many shares on that day

While I'm not a banker, I find with this method looking at investments highly disagreeable. The price of the stock at the time of purchase is the projected future profits discounted to present day. In other words, it is the fundamental value of the firm, which is invariant of its day-to-day fluctuations.

If you have to be watching for the daily upticks, it's a sign the company is either incompetent or is operating in a highly unfavorable environment.

I don't see how any good can be gained from envisaging a purchase price other than your lock-in price.