Struggling this week :(

So I feel like I'm having a bit of a 'crisis of confidence' with myself at the moment.

Logically, I know I'm doing fine - I'm halfway through FB Fit R2 so I must be ok! 😂

Normally, fitness makes me feel strong and happy and does wonders for my mental health - but this week I've been feeling a bit sluggish, and I've started worrying that that means I'm 'losing fitness' - again I know this is pretty much impossible, as I know how great Fit R2 is and I'm genuinely loving it, it's just that sensible, rational me is a bit overwhelmed by these negative feelings right now if that makes sense?

Has anyone else gone through this or know how to deal with it?

I hope this makes sense - I feel like I've senselessly rambled a bit!