I'm 47 and pretty sure I'm in perimenopause. Hair thinning, periods gone v irregular/almost non-existent, erm, "personal" dryness etc. 
But I also don't feel in my right mind, sometimes. Is this normal? I feel like I've lost all my confidence. Like I'm a has-been who's useless compared to the motivated and positive bright young things I see at work. I have a voice in my head a lot of the time saying "I can't do this, I can't do this". It sometimes feels like everything is too much. My job at work has changed during the pandemic and I don't know if it's that but I just feel useless and a fraud.
Yet another day I'll wake up full of positivity and feel fine. I can't tell if it's just pandemic anxiety or perimenopause but I'm not sure how to fix it.