How do you say enjoying myself in french?

There are a few ways to say "enjoying myself" in French, depending on the context and nuance you want to convey:

Formal:

* Je m'amuse beaucoup. (I am having a lot of fun.)

* Je prends beaucoup de plaisir. (I am taking a lot of pleasure.)

Informal:

* Je m'éclate ! (I'm having a blast!)

* Je me régale ! (I'm having a feast!)

* Je m'en donne à cœur joie ! (I'm enjoying myself to the fullest!)

More specific:

* Je passe un bon moment. (I'm having a good time.)

* Je me sens bien. (I feel good.)

For a specific activity:

* J'adore faire du vélo. (I love cycling.)

* Je m'amuse à jouer au tennis. (I'm having fun playing tennis.)

The best way to choose the right phrase depends on the situation and the level of formality you want to use.