Earlier quoted context omitted.
I just checked. I own Apple stock through my RRSP mutual fund. Looks like 0.5% of my investment is Apple. Can I ascertain, about myself, that this wouldn’t affect my decision making?
Even more, if 0.5% of your investment is enough to affect your decision making, you're going to be so paralyzed by analysis paralysis and competing goals you'd never be able to get anything done.
actually this feels like it describes me