I have thought about this, many times. I write a lot and often times I create characters that I can really relate to and they have pieces of me that I want to thrive on rather than have shadowed by my constant mental troubles. Sometimes, just for fun, if a stranger asks me for my name (and I know I'll never see them again), I'll lie and tell them a random name. It does feel a bit uplifting and it makes me take on a persona of someone who I feel I really am rather than someone who is trapped in my depressed mind.

I probably would never follow through with it but maybe you can try going by a different name to strangers you encounter and go off of that? It'd give you a sense of what it'd be like.