This is not your fault. You are a good person, and you are trying your best, and Hashem understands that.
Everyone goes through rough patches sometimes, but some of us have it much worse than others. That just means that the way Hashem measures our performance is on a different scale.
You are a good person. This is your struggle. You are only accountable for what you can do, and you are doing your best.
Have a good night. I hope you feel better in the morning.