http://www.hiveworkshop.com/forums/off-topic-478/how-you-deal-239034/index3.html
http://www.hiveworkshop.com/forums/off-topic-478/life-shit-256131/
http://www.hiveworkshop.com/forums/off-topic-478/need-some-help-can-i-ask-you-pls-259246/
http://www.hiveworkshop.com/forums/medivhs-tower-411/depression-262537/
http://www.hiveworkshop.com/forums/off-topic-478/who-i-am-268170/
Read those carefully and decide for yourself what to take into account in order to get over your state.
Your case isn't that uncommon, you know.
However, as you describe it, being "lazy" und "unmotivated" is nowhere near to a burnout unless you crack up in tears just thinking about work, followed by you going into sheltering all week.
It may also originate from a lack of minerals, vitamines, salt and other neccessities to keep your body health up. The cause is not always limited to the human mind.
If you notice yourself shaking your head as you read this, however, it may be cause by something psychological.
In that case, you need something to motivate you - something that's worth working for.
It doesn't need to be a hard task, like "make tons of money yay!", but rather a simple one.
To give an example, I wrote
my novel over a course of four years and am still writing every now and then. The mere fact that I managed to create something like this out of nothing greatly adds to my self-confidence, helps me sorting out thoughts and... I dunno, it's complicated.
Acknowledging that whatever it is that you set to work is a thing nobody else has feels simply great.
The worst thing, keep that in mind, is to rely on your state and tell people of with: 'No, I'm too unmotivated to do X because I feel like I'm burnt out."
Let me also, lastly, have Shia LaBoeuf scream at you to just... do it: