Hello there, there are a lot of sensible posters here, so I'd really appreciate the chance to pick your brains.
I have a lovely teenage DS and a lovely DP, but I am feeling increasingly smothered, irritable and I just want to be on my own and this is making me feel really guilty.
I'll try not to do the drip feeding thing. I am feeling quite stressed out. DP was made redundant and is doing minimim wage agency work. I recently became self employed, and while I earn more than DP, I still worry that it isn't enough and feel bad about not providing more. I've had a lot of mental and physical health problems over the last few years, and I feel like I should be doing better for myself financially and feel like a bit of a failure, but at least that spurs me on to work harder!
I do work very long hours at the moment, and I frequently feel mentally exhausted. We have no family round here, and I just want to go away by myself for a bit. Every time I try to broach this with DP, he is not happy about this. Then I feel guilty and selfish for suggesting it, financially and relatioship wise.
Tbh everything my DS and DP do at the moment really pisses me off, and I often sleep on the sofa just to get some alone time. The problem is that I never quite get what I need and then this makes me even grumpier and want to spend more time alone.
I know this is a very unpleasant and selfish attitude, but I really can't help it. I've always been a very emotionally self sufficient person, I was a quiet child that didn't 'do' hugs and I recharge my batteries by withdrawing into my own space.
How can I stop feeling like this and engage emotionally with my family again? 
PS, I have a lot of emotional baggage from my own upbringing and I'm starting group art therapy soon.