I went to an assessment session earlier this week to be assessed for possible counselling. They should be calling me back soon to discuss my next appointment. However during my initial session the woman asked why I felt so low most of the time and when I replied I don't know when ever she asked, she thought I just didn't want to tell her why. Although I was actually speaking the truth I really don't know why I feel sad often. She said there has to be a reason for it as nobody feels down for no reason. I really don't know why I feel this way and I want to get better but I just don't know why. Is she right, that there is a reason? If there is I cant seem to figure it out and this worries me. How should I go about this? Thanks in advance

That's what happens in counseling -- you and the counselor will work together to figure out what's going on.

As far as your counselling goes, wait and see what your assessment leads to, and just tell the truth. If you don't know, then you just don't know, but have you eliminated any medical reasons for your down feelings with your doctor before seeing this counselor? How old are you? How long have you had this feeling?

I don't like the sound of the assessment. Badgering you to tell them something when you truthfully don't know is all backwards.
But hopefully she isn't someone trained in therapy, and you will get a good one. Someone who asks the right questions.
Some of this is a result of higher costs and lower insurance coverage, sorry. Therapy takes time, and there just isn't enough.

I didn't know why I was depressed either. It has taken me most of my 70 years to figure it out. I saw therapists off and on, mostly off, and it started years late.
I really only learned two things from therapy, and the rest on my own.
The two things:
I am responsible for my own actions.
No one 'makes' me do, think, or feel, unless I am tied to a chair with a gun to my head. Not even a mean miserable parent who is hell bent on taking it all out on me.