Make 2013 the year you increase your happiness at home with resolutions that will get you motivated to finish lagging projects, learn new skills and add more pizzazz to your space. Sure, you can resolve to clear clutter (see number four below for a fresh way to do that), but that’s not the only way to make a fresh start around the house this year. Let these 13 design resolutions in the slide show below jump-start your inspiration…