I think I have lost my sex appeal how can I get it back?

I’ve had a harrowing few years and somewhere along the line I lost “it”. I look in the mirror and I just see a blob. Things have improved in my life dramatically, but being 47 and thrown into an office of young gorgeous women and men hasn’t helped. I used to work out, wear great underwear, love perfume, and felt sexy. I know you have to feel it to be it. How can I feel it? I went on medication for a while that blew me up. So I have stopped it. However I don’t want to emphasis the external in this question like “Go work out” because I am simply too exhausted and not in that head space. People tell me I am gorgeous all the time and sexy but I think they are just being kind? I know something has to click in me again. To get it back. But what? About a year and a half ago I had loads of guys after me. Flattering me, courting me, I had a lover too. Now the landscape is like a desert with not even a tumble weed blowing past. I can’t compete with women who have had plastic surgery (at work) and big money to get things done to look hotter. Besides I never relied on that before. Did my glamorous colleagues cause this? Something has to change else I will land up like a dried up old spinster. But it has to change in my head. Help!