<human>: Can you give me a shortened version of the text?

Backstory:  
I'm 19 years old, and much like many other people my age I have the common problem of:   
A) not being hired anywhere with enough pay to move out of my parents house  
B) mediocre grades that won't get me where I'd ideally be  

My biggest fear is that I'll be unemployed or not be able to pursue an academic degree to ever be able to feel that I've accomplished something meaningful in life. I'm also dabbling with a mild depression that I've never had officially diagnosed but all symptoms fit perfectly with depression; lack of motivation, I eat very little, can sleep 12-14 hours every day, becoming more and more introvert, I rarely even go outside anymore.

I'm currently trying to study to take the [Swedish Scholastic Aptitude Test] in order to get in to law school which is my dream career. However I cannot find motivation to study no matter how hard I try. I need to drag myself up from this dark spiral I'm currently in, but I don't know how.

I'd like all tips how you guys get motivated (I do get sporadic bursts of motivation, but they rarely last longer than a couple of hours), and how you stay motivated in all aspects of life - training, working, studying or anything!

Please help me, Reddit! Any tips would be helpful, if I had the money I'd hire some slavedriver to whip me when I don't study but... yeah.
<bot>: I'm mildly depressed and need motivational help. How do you get truly motivated and how do you maintain that motivation for months, if not years?