It's often used to introduce a personal perspective or opinion, and can be translated as:
* "According to my..."
* "In my opinion..."
* "From my point of view..."
For example:
* "Segun mi, la película es muy buena." (According to me, the movie is very good.)
* "Segun mi, deberías ir a la playa." (In my opinion, you should go to the beach.)
It's important to note that "segun mi" is often used in informal contexts. In more formal settings, you might use a more formal phrase like "en mi opinión" (in my opinion).