[ZephyrBlu]

You can work on your abilities and be pessimistic though. They aren't mutually exclusive.

[gxespino]

I understand where you're getting at.

I think many pessimistic people don't start or give up earlier and this leads to the self fulfilling prophecy.

Could be wrong, objective data would be needed for sure.

[AYBABTME]

Yes but it's harder, so your expected outcome is lower.