I only do General Support IT for a company, where in specialised IT, you would focus on one aspect and deal only with those, you could work for yourself and charge what you want.

The gardening job is a little help I give to soe friends who are unable to do it themselves, and I don't mind it, plus they give me money as a way of saying thanks.

The bar job is just to meet ore new people, as I have recently moved house, and for a bit extra spending money for the weekends.