The meaning of this sentence is: Not to be defined, I am grateful to be free, I can be anything. This sentence expresses the freedom to maintain one's true state without any restrictions or constraints, and to freely express one's own personality and characteristics. At the same time, you can also express how grateful you are that you are not bound by social norms or traditional concepts, and can pursue your own goals and ideals as you wish, without any external restrictions or pressures. In short, this is a positive attitude towards life that emphasizes freedom, independence and the pursuit of individuality.