What's making me so grumpy and wishing to quarrel with everyone who crosses my path

What is making me short of patience, irritable and angry with the world?

I am still off sick.

I am often in pain and have high fatigue levels 

I am not earning any income 

I/we are in debt 

We have no spare cash for a social life 

I enjoy making doing and mending but at times it's hard not to be able to easily renew worn out things. 

I do not feel of value 

I feel like all my energy is focused on completing chores 

I feel I am not pulling my weight 

I would be happy - keeping house, reading, crafting, volunteering, gardening, projects if I had a small private income to contribute to maintaining a reasonable quality of life 

I am inwardly angry with my parents who have never really recognised the consequences of a disabled child and treating me as "normal" now has major consequences.

I did not want a Pilates spine corrector as my birthday present but knew this was the only way of getting it. Expensive but it will help my back. 

I am frustrated that I am not using my academic achievements - did I achieve them for nothing?