3 weeks clean, I still feel horrible.

I think I’m 3 weeks clean at this point? I’ve honestly lost track…point is I still feel horrible, I know I’m only human, I know humans still sin everyday and I’m honestly just sick of my own humanity…I want to strive to be better, to never sin again, I made a promise to God that I will try my best…I feel if I break it, I fear I’m going to be in deep trouble.