“I’ll handle it” means it’s yours now, not yours until it gets hard.

Taking something on sets an expectation that other people build around, and they stop watching it because you said you had it. The awkward part comes later, when it turns out harder or more boring than it looked. Quietly dropping it then is worse than never offering, because now nobody knows it is loose. Owning a job includes the stretch after the interest wears off.

Before you volunteer this week, picture the worst version of the task and decide whether you still want it. If you have already taken something on, say so now rather than at the deadline. Handing it back honestly is allowed, letting it rot is not.