Any one here approaching 50 and having the blues?

I dont want to sound shallow but I used to feel fit, sexy, vibrant, in control and well ;attractive! I am 47 now and I did go to the salon, get a hair cut, change my hair colour, change my diet, take vitamins, but I just dont feel good I feel blah! In fact I even hate my hair! (after the salon visit).

So now, I avoid going out. I would really appreciate some suggestions, or tips on what helped you. I feel old and horrid.