I consistently have problems with this one. Especially when I spell things like I pronounce them.

Bad: thorow
Good: thorough

This may be a desperate idea but we’ll see if it helps me remember. When do a detailed, hight quality or thorough job you make rough things smooth. Like doing a thorough job sanding down a wood or stone object. It is smooth and no longer rough. So that may help me that I avoid rough edges if I am thorough.

Have a better way to remember? Please provide your idea in the comment section of this blog. Thanks.