Welcome to SI,
My first point of advise is to breath. Take in your surroundings and acknowledge you have made some awful choises. You have hurt the person you are supposed to love more than anything in the world. You did this and now comes that hard work. Stick with SI and you will get support.
My second bit of advise, actually listen to what is being said on here. I would recommend readin every reply at least three times and try to see what is being said. You will get help on here on what to do and what to to do. Please try and follow the advise. I came on here looking for a simple and easy fix to help my BS "get over it". I did not want to nor did I feel the need to look into myself. I read words on a screen and chose to ignore them as they did not "fit" into what I chose to see as a way forward. I wasted years of R (recovery or reconciliation) acting selfishly and ignoring advise.
Thirdly, as advised above, thinking "I am a piece of shit and do not deserve to live" is really not going to help you move forward into a safe partner for your BS. It does not help them see you are making effort and is likely to keep you in shame spirals for a long time. I know it’s hard and it is not something that happens without work with a good IC. You are in a dark place and getting out of this is different for everyone on here. Some, like me, needed to hit a point where they could no longer live as they were. Others find empathy a lot quicker and make a decision to change a lot earlier. Read other posts or some of the bios of the longer term posters on here. We have all been where you are. I am still on the journey to self discovery and dealing with my own emotions so I can only offer support that it can be done but does take a lot of effort. It is not going to happen by magic but it does come.
Read the book "How to help your spouse heal from your affair" by Linda MacDonald. I short book and good for someone in the early stages of infidelity. Again, it is full of advice with you need to follow to help both you and your BS through the hurt you have inflicted on yourselves.
Work on empathy and use this to drive yourself forwards. It is easy to put yourself in your partners shoes. I did, did not like how I felt and chose to avoid responsibility. This is damaging to both you and BS. When you feel like shit (you will and you should) you need to use this feeling to drive positive change. I did not do this for many years and still struggle with feeling sorry for myself.
The advice you get on here and the challenges you will receive are sent with compassion. People are not attacking you when they call you out on some obvious bullshit. Please try to remember this should it happen.
Keep posting, keep reading and breath. Research into CBT as this has a lot of techniques on negative self talk or finding true empathy. It is hard and cannot be done half assed (trust me been there done that). Hopefully you will get responses from others WS further down the road than I am.
WH (50's)
Multiple sexual, emotional and online affairs. Financial infidelity and emotional abuse. Physical abuse and intimidation.
D-days 2003, 2017, multiple d-days and TT through 2018 to 2023. 28 years of destructive and health damaging choice