Alright this is going to be a long post so i will put Tl:dr at the end. Also please excuse me english (i'm not from english speaking country)

So as the title says i have problem with my motivation and i also know the root of it. It all began when i was 14 and i started dealing with depression and anxiety. At the age of 15 (after my suicide attempt) i got diagnosed, got medication and it was also found out that i have aspergers (which was quite suprising because it usualy get diagnosed earlier in life). Althou my mood has stabilized and everything was going alright exept my complete loss of motivation. I tought it was just about time but now i'm 21 and i still have the same problem.

Now i'm trying to work on this with my doctors but still no luck. I think it's self feeding cycle... My doctor recomended to start doing some sport but there the problem i can't bring myself to it. Some days i have problem to even get myself from bed (but this is probably due to my circadian rhythm, i usualy fall a sleep at around 1pm even with my medication and when i use something stronger i'm groggy the next morning)

The biggest problem for me is studing. I pretty much don't care about my marks so i'm just doing the minimum to get by but latetly it became much worse. The fact that i'm going to work at fathers company after school doesn't help. I can find milion reasons why i shouldn't study but i can't find one to study. I like my subject (economics) and i can be quite good at it when i want (i was at national finale of economic competition for schools) but the thing is i see it as useless effort. I just can't wait to have this all over. Now this trouble isn't new i pretty much had the same problem at primary school the subjects were either too easy so i fooled around and was bored or it was something useless for my future life (i really didn't care about chemistry etc.)

All of this feeds back to my depression because i know i should study and i want to but i fail everytime and hate myself for it which in turn makes it harder to do something.

Tl:dr I have been diagnosed with depression, axiety and aspergers and i have long term lack of motivation even thou i take my medication (mirtazapin 30mg, olwexya 150mg).

Anyways i will be thanful for any suggestions or help.

Ps: Sorry for my rambling but i hope i makes some sence, i just needed to get it off my chest.