Which SEO activities we should avoid?

Which SEO activities we should avoid?
Thank you !

We should strictly avoid Black Hat SEO techniques to keep a good ranking of your website in search engines, and also keeping your website safe from any kind of penalty.

Hello RH

on-page Over optimization must be avoided.

Thank you ..

Hello Guys ..

Just the avoid the things which violates the Google's rule and guidelines and don't try black hat seo at all. Most importantly be up to date about all the updates by google and web spam master Matt cutt...Do study and R&D to know about black hat seo.

over optimization is very harm for website.