/ic/ - Artwork/Critique

>professional artist working in the game industry
>full time salaried position with benefits
>artists around me are incredible
>management is great
>developing exciting new IPs
>still feel like I don't belong
>still feel like a fraud
>still feel like a useless failure
>cry most nights at home

What the fuck is wrong with me

>Getting pretty decent at muscles, poses, bodies, etc.
>Cannot draw a table
>Cannot draw a counter
>Cannot draw a sword
Anything square utterly ruins me. Is this a common problem or do I have a unique variety of retardation?