What comes first? Book or author branding?

I am writing my first book and was confused about whether I should market my book first or my identity as an author.

There is no need to worry so much about exceeding your budget. You can easily look for some
affordable book marketing services offered by professional ghostwriters and market your book successfully. There are many ghostwriters or ghostwriting companies that tailor packages according to the needs of their clients. This way you can easily get professional help while staying within your budget.