Ask HN: Do you make decisions like its your company?

This has been coming up more for me. I understand as shareholders we should "feel ownership" but sometimes I can't help but think the decisions I make at work aren't the same decisions I would be making if I actually owned a substantial part of the company. I wonder if my decisions would be different if I was CEO or a primary or large shareholder? Do you feel like yo would be doing things differently if you were CEO or a founder? Do you feel like your decisions would change? Even if it was the exact same situation/decision you are faced with today, do you think you would be playing it differently if you had more ownership? Do you make decisions like it's your company?

Note: I am a Sr. Director at a fortune 100 tech giant.