It won't be perfect. Feelings aren't perfect and quantifiable. It's ok! Take your best guess. You can even give a range! Like... "4-5" or "4.8 (better than a 4, but not quite a 5". Think about it - if you know it's in the 4-5 range, that's still better information that not knowing where it is at all on a 1-10 range! Heck, if you know it's in the 3-5 range, that still gives your T an idea of where you are, even if it's less precise - you've still limited it to a smaller part of the range.

If it really bothers you, ditch the numbers and just write how you feel. Too bad for T, it's your therapy, you get to do it how you want. So... it might be "very depressed, I hate the world" or "Slightly depressed" or "Scared out of my mind!"

Also, consider that the fact that it's so hard for you might be useful to talk to your therapist about. Just an idea!

Good luck!

But really, it's ok to not get it perfect - because nobody is expecting perfect, and your T shouldn't be making big huge treatment decisions based on whether you marked something as 4 versus 5!