I’ve generally recommended interior designer Beata Heuman, but her book is also excellent. A lovely excerpt that touched me:
There's a lot of joy in expressing one's individuality. It is freeing. It can be exhilarating. It can also be pretty irresistible when you see the unabashed, true character of another individual. It may be very different from yours, but it is all the more alluring for it.
Although we have all wished to be someone else at some point, we can't actually be anything but what we are. Having the confidence not only to accept that, but celebrate it through self-expression, in all its strangeness and randomness, is to me the zest of life.