hoc possum (hog possum?)

Laura OLPH told me her affirmation, when she's feelin' all down and incompetent, is, "I can do this." I translated it into Latin for her: hoc possum... which resulted in her doodling up the following bit of whimsy:

Original here, with a photo of the artwork in situ.

I can't decide if the proper response is to "Hrmph" or to be honored.