You can define it whatever way you want of course.
For some sexual mastery means being able to trigger incredible orgasms in your partner, have total ejaculation control, be able to engage in hours of dynamic sex play or know dozens of complex sexual postures.
These are all ok.
I simply want to open a space and look at sexual energy as a fire you want to master, tame and activate at will.
Imagine this source of unlimited power and energy flowing through your system.
Imagine that you really own it, feel it, master it.
This is one of the core targets of Vital Sex.
It is to be able to play, activate and direct this energy at will.