I never said I wanted a 'happy' life but an interesting one. From separation and loss, I have learned a lot. I have become strong and resilient, as is the case of almost every human being exposed to life and to the world. We don't even know how strong we are until we are forced to bring that hidden strength forward.

This quote means that the speaker is not looking for an easy life, but a life that will offer challenges, hardships and difficult moments, as these experiences can help to teach and make them stronger, more resilient, and more aware of their inner strength. Everyone can become stronger and more capable if they allow themselves to be exposed to life and all its challenges. Even if we don’t realize it, we can all tap into our hidden strength when we need to.