A project is some usually non-recurring task in a field that I enjoy and/or would like to get better at. A chore is some usually recurring task in a field that I either don't enjoy or see no need to improve my skills in.
My advice is to outsource chores (to the extent that you can afford) and prefer a DIY approach to projects (to the extent that you have time).
Chores can usually be outsourced at a profit, since they can often take advantage of economies of scale (e.g. a lawn maintenance service can afford really nice mowers that work even on long or wet grass and that do the work of two or three push-behind mowers).