How to Reset Photoshop's Tools Back to Their Defaults
Adobe Photoshop is an insanely big, incredibly customizable application. Sometimes, some of the (many) tools can stop working as you expect them to, either because of something you did deliberately or by accident—or a bug. Either way, resetting a tool back to its default settings can often fix any issues.
Kaspars Grinvalds Shutterstock Adobe Photoshop Tool Options Reset All Your Tools Fall Tools Reset All Tools
Source: howtogeek.com