Do we have to define ourselves really?

I’m bipolar. When I’m high and manic, I’m completely bohemian, I love reading poetry in the middle of the night, the more passionate the better, I paint more, I want to go the sea, I wear more romantic clothes, I am more sensual, I write much much more and better, I have deeper conversations.

When I’m not mild manic, I just like to bake cookies, be a sweet homemaker type, watch films or write novels, study, knit socks, that sort of thing, do sensible cosy things

Because of this I feel like I have two personalities, and it gets confusing? Do we have to define ourselves really.