Hi, I have taken a new job in the new year and for the 12 months prior to that I worked for horrendous people which has really knocked my confidence. Most of the meaningful work was given to a male worker with lots less experience than me and it was a sexist environment. I think backstory is important as I have started my new office in not the best frame of mind sadly. My new job is everything I wanted, but it is a lot to learn and so most of my work is been given back to me, sometimes several times, in order to get it worded correctly etc (not uncommon in my line of work). Now I have confidence issues, imposter syndrome is kicking in and I can't shake the feeling of not being good enough. I am trying my best, but feel like I am drowning. My supervisor is aware of this and is trying to support me so it's not all bad, but I think because of really bad past experience I just can't shake the not good enough feelings and so I am over analysing every little thing and feeling stressed out to heck! Before this I had a very similar job for years and was well respected, but this is a real step up. I'm worried about letting my family down and the negative thoughts are really starting to affect me.
I wondered whether anyone might have had similar issues, or any advice?
I have no close friends near where we live, and have tried talking therapies but that didn't help one jot 
Thank you for listening. X x