Happy Birthday from a (soon to be) 46-year-old!
May I suggest a birthday present to yourself, since you're reflecting on 50 years?
AT THE EDGE OF THE LIGHT: Thoughts on Photography & Photographers, Talent & Genius.
By David Travis.
David Travis is the Curator of Photography at The Art Institute of Chicago. One of the things he treats in his book is how genius is freed, refined, and made altogether better by, well, age. His specific example is Edward Weston, with examples of work produced by poets, authors, and other artists past the age of 50. An example here:
Happy Birthday again, and you'll have to let us know how the photography is from where you are (grin).