The next step is how to refuse. Although we are honest, we cannot be bullied by others. It is our job to finish it seriously, not our job. We don't need to do more. How to refuse? There are two ways. First, the next time he gives you a job, you should also ask him to do it. For example, I haven't done so-and-so work. To tell you the truth, I did this thankless thing, and you helped me with my unfinished work. You must make a request. Slowly, it only takes a few times, and he will feel that you are not easy to be taken care of and that your work is not so unconditional and relaxed. Next time he asks you for a job, he will consider it.
Another way to refuse is to finish a sentence without any explanation and ignore him. Next time I give you these jobs, you say you won't do it, and everyone will draw lots to decide. If they want to continue, you can just strike the table and leave, let them know that you are not easy to mess with, and you are also a temper person. This has nothing to do with lack of tact. Why can others refuse and you dare not? What are they better than you? What did you miss from them? No, everyone is the same. They belong to the same company. Why did you let them go?