I was claiming benefits when I was 16-17 due to having generalized anxiety disorder and depression. I dropped out of secondary school after about 3 months due to my problems, so from the age of around 12-16 I did my school work online at home. I got 0 gcses when I took them and I got pissed off about that, I felt restricted because I'm not stupid and I wanted to learn but I couldn't, so I overcame my difficulties and now I'm an apprentice
Now that I'm older (only really changed in the last year) I can live a relatively normal life, I do however occasionally get depressed and anxious still.
I did personally get a bit of money (including backpay) due to my illnesses, which did pay for my car insurance and fuel, but from what I went through it isn't about the money AT ALL. Getting my car also catapulted me into getting motivated, because I started college in September after ncs, and it was a lot easier being able to drive there instead of having 45 minutes of a stressful bus journey.
Also in college, I can just go sit in the car and disconnect from the stress for a while at break time, which helps A TON. Plus if we get let out early I can just leave right away.
I never wanted to 'sit' on benefits like some people do, I want to pay back by working now, so effectively benefits actually pushed me into getting somewhere with my life, considering it allowed me to run my car, get to college etc...
Long story short, from me to the person reading, if you're depressed/anxious about something, don't let it control your life, you only live once, so make the most of it and go get what you want! I remember crying last April to my mum about not being able to live a normal life. I was pretty much at rock bottom and I made something out of it.
Sorry this is long, but it's why I believe benefits should be given to people who have long term depression/anxiety.