That's it, I'm not doing it anymore ⠀

Yes, there are times when a person says this. He or she starts something and then suddenly gives up. For example, started learning a foreign language but quit. Wanted to go swimming, but didn't go further than one training. There are a lot of examples... Just like Sisyphus could not roll a stone up a hill, people stumble on the spot, being offended by the impossible task, circumstances and people around them, and then get disappointed in theirselves. The situation when a person doesn't get things done is one of the most common negative scenarios. It is called "Sisyphus" in psychology.